2010 Chevrolet Camaro LT

2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

DESCRIPTION AND OPERATION

CRANKCASE VENTILATION SYSTEM DESCRIPTION

A closed crankcase ventilation system is used in order to provide a more complete scavenging of the crankcase
vapors. Fresh air from the throttle body is supplied to the crankcase, mixed with blow-by gases, and then passed
through a crankcase ventilation valve into the intake manifold.

The primary control is through the crankcase ventilation valve which meters the flow at a rate depending on
manifold vacuum. To maintain idle quality, the crankcase ventilation valve restricts the flow when intake
manifold vacuum is high. If abnormal operating conditions arise, the system is designed to allow excessive
amounts of blow-by gases to back flow through the crankcase vent tube into the engine air inlet to be consumed
by normal combustion.

Filtered fresh air is routed from up-stream of the throttle blade to the front of the right rocker arm cover via a
formed rubber hose. To reduce the potential of oil pullover into the throttle bore area due to back flow of the
ventilation system, the fitting in the right rocker arm cover is shielded from the rocker arms. From there fresh
air and gases are routed through the crankcase and up to the opposite rocker arm cover where the positive
crankcase ventilation (PCV) valve is located. Gases are then routed through a hose to the intake manifold.

DRIVE BELT SYSTEM DESCRIPTION

The drive belt system consists of the following components:

l The drive belt

l The drive belt tensioner
l The drive belt idler pulley
l The crankshaft balancer pulley
l The accessory drive component mounting brackets
l The accessory drive components
¡ The power steering pump, if belt driven

¡ The generator

¡ The A/C compressor, if equipped

¡ The engine cooling fan, if belt driven

¡ The water pump, if belt driven

¡ The vacuum pump, if equipped

¡ The air compressor, if equipped

The drive belt system may use 1 belt or 2 belts. The drive belt is thin so that it can bend backwards and has
several ribs to match the grooves in the pulleys. The drive belts are made of different types of rubbers,
chloroprene or EPDM, and have different layers or plys containing either fiber cloth or cords for reinforcement.

Both sides of the drive belt may be used to drive the different accessory drive components. When the back side
of the drive belt is used to drive a pulley, the pulley is smooth.

lunes, 28 de abril de 2025 03:13:18

03:13:13 p. m. Page 1 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

The drive belt is pulled by the crankshaft balancer pulley across the accessory drive component pulleys. The
spring loaded drive belt tensioner keeps constant tension on the drive belt to prevent the drive belt from
slipping. The drive belt tensioner arm will move when loads are applied to the drive belt by the accessory drive
components and the crankshaft.

The drive belt system may have an idler pulley, which is used to add wrap to the adjacent pulleys. Some
systems use an idler pulley in place of an accessory drive component when the vehicle is not equipped with the
accessory.

ENGINE COMPONENT DESCRIPTION (6.2L LS3)

Fig. 1: 6.2 Liter V8 Engine (LS3)

Courtesy of GENERAL MOTORS CORP.

The 6.2 Liter V8 engine is identified as RPO LS3 VIN W.

Camshaft and Drive System

A hollow billet steel 1 piece camshaft is supported by 5 bearings pressed into the engine block. The camshaft
timing sprocket is mounted to the front of the camshaft and is driven by the crankshaft sprocket through the

lunes, 28 de abril de 2025 03:13:14 p. m. Page 2 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

camshaft timing chain. The camshaft position (CMP) sensor lobes are incorporated into the front face of the
camshaft sprocket with the CMP sensor mounted in the engine front cover. A timing chain tensioner is mounted
to the front of the engine block above the crankshaft sprocket. The externally splined crankshaft sprocket is
positioned to the crankshaft by a key and keyway. The crankshaft sprocket external splines drive the oil pump
drive gear. A retaining plate mounted to the front of the engine block maintains camshaft location.

Crankshaft

The crankshaft is cast iron. The crankshaft is supported by 5 crankshaft bearings. The bearings are retained by
crankshaft bearing caps which are machined with the engine block for proper alignment and clearance. The
crankshaft journals are undercut and rolled. The center main journal is the thrust journal. A crankshaft position
(CKP) reluctor ring is press fit mounted at the rear of the crankshaft. The reluctor ring is not serviceable
separately.

Cylinder Heads

The cylinder heads are cast aluminum and have pressed in place powdered metal valve guides and valve seats.
Passages for the engine coolant air bleed system are at the front of each cylinder head. The valve rocker arm
covers are retained to the cylinder heads by 4 center mounted rocker arm cover bolts. High-flow cylinder heads
with modified intake and exhaust ports are used to increase flow.

Engine Block

The engine block is a cam-in-block deep skirt 90 degree V configuration with 5 crankshaft bearing caps. The
engine block is cast aluminum. The 5 crankshaft bearing caps each have 4 vertical M10 and 2 horizontal M8
mounting bolts. The camshaft is supported by 5 camshaft bearings pressed into the block.

Exhaust Manifolds

The exhaust manifolds are a 1 piece cast iron design. The exhaust manifolds direct exhaust gasses from the
combustion chambers to the exhaust system. Each manifold also has an externally mounted heat shield that is
retained by bolts.

Intake Manifold

The intake manifold is a 1 piece composite design that incorporates brass threaded inserts for mounting the fuel
rail, throttle body, and wire harness studs. A non-serviceable cap with acoustic foam has been added to the top
of the manifold to reduce engine noise. Each side of the intake manifold is sealed to the cylinder head by a non-
reusable push-in-place silicone sealing gasket. The electronically actuated throttle body bolts to the front of the
intake manifold. The throttle body is sealed by a 1 piece push-in-place silicone gasket. The fuel rail assembly,
with 8 separate fuel injectors, is retained to the intake by 4 bolts. The injectors are seated into their individual
manifold bores with O-ring seals to provide sealing. A fuel rail stop bracket is retained to the rear left of the
intake manifold by mounting bolts. The manifold absolute pressure (MAP) sensor is installed and retained to
the top front of the intake manifold and sealed by an O-ring seal. The evaporative emission (EVAP) canister
purge solenoid valve is mounted to the front of the right cylinder head. There are no coolant passages within the
intake manifold.

Oil Pan

lunes, 28 de abril de 2025 03:13:14 p. m. Page 3 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

The structural rear-sump oil pan is cast aluminum. Incorporated into the design are the oil filter mounting boss,
drain plug opening, baffle, oil level sensor, oil pressure relief valve, and oil level indicator tube opening. The oil
filter bypass valve is now internal to the oil filter. An external engine oil cooler assembly is mounted directly to
the left side of the oil pan. The alignment of the structural oil pan to the rear of the engine block and
transmission housing is critical.

Piston and Connecting Rod Assembly

The pistons are cast aluminum. The pistons use 2 compression rings and 1 oil control ring assembly. The piston
is a low friction, lightweight design with a flat or recessed top and barrel shaped skirt. The piston pins are
chromium steel and are a full-floating design. The connecting rods are powdered metal. The connecting rods are
fractured at the connecting rod journal and then machined for the proper clearance. All applications use a piston
with a graphite coated skirt. The piston and pin are to be serviced as an assembly.

Valve Rocker Arm Cover Assemblies

The valve rocker arm covers are cast aluminum and use a pre-molded silicon gasket for sealing. Mounted to
each rocker cover are the coil and bracket assemblies. Incorporated into the right cover is the oil fill tube and
the positive crankcase ventilation (PCV) fresh air passage.

Valve Train

Motion is transmitted from the camshaft through the hydraulic roller valve lifters and tubular pushrods to the
roller type rocker arms. The nylon valve lifter guides position and retain the valve lifters. The valve rocker arms
for each bank of cylinders are mounted on pivot supports. Each rocker arm is retained on the pivot support and
cylinder head by a bolt. The inlet rocker arms are offset 6 mm (0.24 in) to enable more direct intake flow. Valve
lash is net build.

ENGINE COMPONENT DESCRIPTION (6.2L L99)

lunes, 28 de abril de 2025 03:13:14 p. m. Page 4 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 2: 6.2 Liter V8 Engine (L99)

Courtesy of GENERAL MOTORS CORP.

The 6.2 Liter V8 engine is identified as RPO L99 VIN J.

Camshaft and Drive System

A billet steel 1-piece camshaft is supported by 5 bearings pressed into the engine block. The camshaft position
(CMP) actuator is mounted to the front of the camshaft and retained by the CMP solenoid valve. The CMP
actuator is driven by the crankshaft sprocket through the camshaft timing chain. The CMP sensor wheel is
incorporated into the front face of the CMP actuator with the CMP sensor and CMP actuator magnet mounted in
the engine front cover. A timing chain tensioner is mounted to the front of the engine block above the
crankshaft sprocket. The externally splined crankshaft sprocket is positioned to the crankshaft by a key and
keyway. The crankshaft sprocket external splines drive the oil pump drive gear. A retaining plate mounted to
the front of the engine block maintains camshaft location. Refer to Camshaft Position Actuator and Solenoid
Valve Description.

Crankshaft

The crankshaft is cast iron. The crankshaft is supported by 5 crankshaft bearings. The bearings are retained by

lunes, 28 de abril de 2025 03:13:14 p. m. Page 5 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

crankshaft bearing caps which are machined with the engine block for proper alignment and clearance. The
crankshaft journals are undercut and rolled. The center main journal is the thrust journal. A crankshaft position
(CKP) reluctor ring is press fit mounted at the rear of the crankshaft. The reluctor ring is not serviceable
separately.

Cylinder Heads

The cylinder heads are cast aluminum and have pressed in place powdered metal valve guides and valve seats.
Passages for the engine coolant air bleed system are at the front of each cylinder head. The valve rocker arm
covers are retained to the cylinder heads by 4 center mounted rocker arm cover bolts. High-flow cylinder heads
with modified intake and exhaust ports are used to increase flow.

Engine Block

The engine block is a cam-in-block deep skirt 90 degree V configuration with 5 crankshaft bearing caps. The
engine block is cast aluminum. The 5 crankshaft bearing caps each have 4 vertical M10 and 2 horizontal M8
mounting bolts. The camshaft is supported by 5 camshaft bearings pressed into the block.

Exhaust Manifolds

The exhaust manifolds are a 1 piece cast iron design. The exhaust manifolds direct exhaust gasses from the
combustion chambers to the exhaust system. Each manifold also has an externally mounted heat shield that is
retained by bolts.

Intake Manifold

The intake manifold is a 1 piece composite design that incorporates brass threaded inserts for mounting the fuel
rail, throttle body, and wire harness studs. A non-serviceable cap with acoustic foam has been added to the top
of the manifold to reduce engine noise. Each side of the intake manifold is sealed to the cylinder head by a non-
reusable push-in-place silicone sealing gasket. The electronically actuated throttle body bolts to the front of the
intake manifold. The throttle body is sealed by a 1 piece push-in-place silicone gasket. The fuel rail assembly,
with 8 separate fuel injectors, is retained to the intake by 4 bolts. The injectors are seated into their individual
manifold bores with O-ring seals to provide sealing. A fuel rail stop bracket is retained to the rear left of the
intake manifold by mounting bolts. The manifold absolute pressure (MAP) sensor is installed and retained to
the top front of the intake manifold and sealed by an O-ring seal. The evaporative emission (EVAP) canister
purge solenoid valve is mounted to the front of the right cylinder head. There are no coolant passages within the
intake manifold.

Oil Pan

The structural rear-sump oil pan is cast aluminum. Incorporated into the design are the oil filter mounting boss,
drain plug opening, baffle, oil level sensor, oil pressure relief valve, and oil level indicator tube opening. The oil
filter bypass valve is now internal to the oil filter. An external engine oil cooler assembly is mounted directly to
the left side of the oil pan. Alignment of the structural oil pan to the rear of the engine block and transmission
housing is critical.

Piston and Connecting Rod Assembly

lunes, 28 de abril de 2025 03:13:14 p. m. Page 6 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

The pistons are cast aluminum. The pistons use 2 compression rings and 1 oil control ring assembly. The piston
is a low friction, lightweight design with a flat or recessed top and barrel shaped skirt. The piston pins are
chromium steel and are a full-floating design. The connecting rods are powdered metal. The connecting rods are
fractured at the connecting rod journal and then machined for the proper clearance. All applications use a piston
with a graphite coated skirt. The piston and pin are to be serviced as an assembly.

Valve Rocker Arm Cover Assemblies

The valve rocker arm covers are cast aluminum and use a pre-molded silicon gasket for sealing. Mounted to
each rocker cover are the coil and bracket assemblies. Incorporated into the right cover is the oil fill tube and
the positive crankcase ventilation (PCV) fresh air passage.

Valve Train

Motion is transmitted from the camshaft through the hydraulic roller valve lifters and tubular pushrods to the
roller type rocker arms. The nylon valve lifter guides position and retain the valve lifters. The valve rocker arms
for each bank of cylinders are mounted on pedestals or pivot supports. Each rocker arm is retained on the pivot
support and cylinder head by a bolt. Valve lash is net build. Cylinders 1, 4, 6, and 7 are active fuel management.
Refer to Cylinder Deactivation (Active Fuel Management) System Description.

CYLINDER DEACTIVATION (ACTIVE FUEL MANAGEMENT) SYSTEM DESCRIPTION

System Operation

General Motors Active Fuel Management engine control system has the ability, under certain light load driving
conditions, to provide maximum fuel economy by deactivating 4 of the engines 8 cylinders. The engine will
normally operate on 8 cylinders in V8 mode during starting, idling, and medium or heavy throttle conditions.
When commanded ON, the engine control module (ECM) will direct the active fuel management system and
deactivate cylinders 1 and 7 on the left bank and cylinders 4 and 6 on the right bank, forcing V4 mode. Refer to
Lubrication Description (6.2L LS3) or Lubrication Description (6.2L L99) and Cylinder Deactivation
(Active Fuel Management) System Description .

Valve Lifter Oil Manifold Assembly

lunes, 28 de abril de 2025 03:13:14 p. m. Page 7 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 3: View Of Engine Oil Flow

Courtesy of GENERAL MOTORS CORP.

The valve lifter oil manifold assembly (1) is bolted to the top of the engine block beneath the intake manifold
assembly. The oil manifold consists of 4 electrically operated and normally-closed solenoids (2). Each solenoid
directs the flow of pressurized engine oil to the active fuel management intake and exhaust valve lifters (5). The
active fuel management oil pressure relief valve (6), located in the oil pan, regulates engine oil pressure to the
lubrication system and the oil manifold.

When enabling conditions are met for active fuel management operation, the ECM will ground each solenoid
control circuit in firing order sequence, allowing current to flow through the solenoid windings. With the
windings energized, the solenoid valves open and direct pressurized engine oil through the valve lifter oil
manifold into 8 vertical passages in the engine block lifter valley. The 8 vertical passages, 2 per cylinder, direct
pressurized oil to the valve lifter bores of the cylinders to be deactivated. When vehicle operating conditions
require a return to V8 mode, the ECM will turn OFF the ground circuit for the solenoids, allowing the solenoid
valves to close. When the solenoid valves are closed, remaining oil pressure is exhausted through the bleed
passages of the valve lifter oil manifold into the engine block lifter valley. The housing of the oil manifold
incorporates several oil bleed passages that continually purge trapped air from the manifold and engine block.

To help control contamination within the active fuel management hydraulic system, a small replaceable oil filter

lunes, 28 de abril de 2025 03:13:14 p. m. Page 8 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

(4) is located in the valve lifter oil manifold oil inlet passage. The oil pressure sensor (3) monitors engine oil
pressure and provides information to the ECM.

Active Fuel Management Valve Lifters

Fig. 4: Displacement On Demand Valve Lifters

Courtesy of GENERAL MOTORS CORP.

When operating in V8 mode, the active fuel management valve lifters function similar to the non-active fuel
management valve lifters. The active fuel management oil manifold solenoids are in the closed position, with no
pressurized oil directed to the valve lifters. The pushrod (1) travels upward and downward to actuate the rocker
arm and valve. The spring loaded locking pins (5) of the lifter are extended outward and mechanically lock the
pin housing (4) to the outer body of the valve lifter (3).

When the active fuel management system is commanded ON, the ECM will direct the solenoids of the oil
manifold to open and direct pressurized oil to the valve lifters. Oil travels through the valve lifter oil manifold
and engine block oil galleries and enters the inlet port (6) of the valve lifter.

When operating in V4 mode, pressurized oil forces the locking pins (11) inward. The pushrod (7) remains in a
constant position and does not travel upward and downward. The outer body of the lifter (9) moves upward and
downward independently from the pin housing (10). The valve lifter spring (8) retains tension on the valve train
components to eliminate valve train noise.

When the active fuel management system is commanded OFF, the ECM directs the solenoids of the oil
manifold to close, stopping the flow of pressurized oil to the valve lifters. The oil pressure within the lifter will
decrease and the locking pins will move outward to mechanically lock the pin housing and outer body.

lunes, 28 de abril de 2025 03:13:14 p. m. Page 9 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Engine Block

Fig. 5: Active Fuel Management Engine Block

Courtesy of GENERAL MOTORS CORP.

The active fuel management engine block incorporates additional features to support active fuel management
system operation. Engine oil pressure is routed to the valve lifter oil manifold assembly from an oil gallery (2)
in the rear of the cylinder block. Cylinders 1, 4, 6, and 7 each have 2 vertical, cast-in-block oil passages (1). The
vertical oil passages permit oil flow from the manifold assembly to the valve lifter bores.

Engine Control Module (ECM)

Refer to Cylinder Deactivation (Active Fuel Management) System Description .

CAMSHAFT POSITION ACTUATOR AND SOLENOID VALVE DESCRIPTION

Camshaft

Fig. 6: Camshaft Lubrication Path

Courtesy of GENERAL MOTORS CORP.

lunes, 28 de abril de 2025 03:13:14 p. m. Page 10 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

The camshaft is designed to provide a lubrication path for pressurized engine oil to flow to the camshaft
position (CMP) actuator. Pressurized engine oil enters the camshaft at bearing journal location number 2. Oil
travels through the camshaft, out the front, and into the CMP actuator solenoid valve.

CMP Actuator Solenoid Valve

Fig. 7: CMP Actuator Solenoid Valve Components

Courtesy of GENERAL MOTORS CORP.

The CMP actuator solenoid valve consists of a housing, spool valve (1), spool return spring (2), oil filter (3),
inlet check ball return spring (4), and inlet check ball (5). Pressurized engine oil enters the valve and travels
through the filter to the spool. Spool position is controlled by the CMP magnet and engine control module
(ECM). When the spool is moved to the proper position, oil flow is directed through the valve and into the CMP
actuator assembly. The CMP solenoid valve is a torque-to-yield design and should be replaced each time it is
removed.

CMP Actuator Magnet

Fig. 8: View Of CMP Actuator Magnet & Components

Courtesy of GENERAL MOTORS CORP.

lunes, 28 de abril de 2025 03:13:14 p. m. Page 11 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

The CMP actuator magnet (752) is located in the engine front cover and is sealed by a gasket (753). The CMP
actuator magnet is controlled by a 12-volt 150 Hz pulse width 0-100 percent duty cycle signal from the ECM.
When energized, the solenoid uses electromagnetic force on the magnet pintle to position the spool valve of the
CMP solenoid valve.

CMP Actuator

Fig. 9: View Of CMP Actuator Components

Courtesy of GENERAL MOTORS CORP.

The CMP actuator is a vane type design that hydraulically changes angle or timing of the camshaft relative to
crankshaft position. The CMP actuator allows earlier or later intake and exhaust valve opening during the 4-
stroke engine cycle. The CMP actuator cannot vary the duration of valve opening or valve lift. The CMP
actuator is to be serviced as an assembly. For system operation, refer to Camshaft Actuator System
Description .

The CMP actuator consists of the CMP reluctor wheel (1), wheel retaining pins (2), return spring (3), front
cover (4), park position pin (5), park position pin spring (6), vanes and vane springs (7), rotor (8), housing with
chain sprocket (9), sealing cover/thrust plate (10), and bolts (11).

CMP System Operation

lunes, 28 de abril de 2025 03:13:14 p. m. Page 12 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 10: CMP Actuator

Courtesy of GENERAL MOTORS CORP.

A CMP actuator dynamically changes valve timing events relative to piston timing by controlling camshaft
position. This is sometimes referred to as variable valve timing or camshaft phasing. Variable valve timing or
camshaft phasing does not change duration or lift.

l By advancing camshaft timing, an improvement in low end torque can be achieved.

l By retarding camshaft timing slightly, an improvement in high end power can be achieved.
l By retarding camshaft timing significantly, an improvement in light load fuel economy can be achieved.

There are 5 cavities divided by vanes within the CMP actuator.

l When oil is directed to the advance cavities (1), the camshaft timing is advanced.
l When oil is directed to the retard cavities (2), the camshaft timing is retarded.
l When oil is directed to both cavities, the camshaft is held stationary.

lunes, 28 de abril de 2025 03:13:14 p. m. Page 13 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 11: Timing Camshaft - 52 Degree Range Of Authority

Courtesy of GENERAL MOTORS CORP.

The CMP actuator has a 52 degree range of authority. With the engine not running and no engine oil pressure to
the CMP actuator, the high tension spring positions camshaft timing at the 7 degree advanced park position.
During normal engine operation, and based on performance requirements, the ECM may adjust camshaft
timing, as required, within a range from 7 degrees advanced to 45 degrees retard.

CMP System Lubrication Flow and Actuator Operation

lunes, 28 de abril de 2025 03:13:14 p. m. Page 14 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 12: Cutaway View Of Actuator

Courtesy of GENERAL MOTORS CORP.

1. Oil enters the camshaft at the second main bearing journal (1).
2. Oil travels through the camshaft into the CMP actuator valve check ball (2) and filter (3).
3. Oil exits the valve and travels through the internal passages of the camshaft (4).
4. Oil exits the camshaft and enters the actuator oil entry ports.
5. Oil travels through the actuator and is directed back into the valve (5).
6. Valve spool position directs oil to the advance or retard passages of the actuator.

The valve may also, under certain conditions, be positioned in a neutral position with no flow to either the
advance or retard passages of the actuator.

Fig. 13: Identifying Actuator Passages

Courtesy of GENERAL MOTORS CORP.

1. Oil flows from the camshaft into the valve inlet (3) through the internal check ball and filter.
2. Oil exits the valve (2) and travels within the internal passages of the camshaft into the entry ports (7) of
the actuator.

lunes, 28 de abril de 2025 03:13:14 p. m. Page 15 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

3. The center oil groove of the actuator is pressurized and oil reenters the valve (1).
4. Valve spool position directs oil out of the valve advance (5) or retard (4) ports to the actuator.

The valve may also, under certain conditions, be positioned in a neutral position with no flow to either the
advance or retard passages of the actuator.

Fig. 14: Advance & Retard Cavities

Courtesy of GENERAL MOTORS CORP.

1. Pressurized oil enters the retard cavities (2) of the actuator and moves the park pin (3) from the locked
position.
2. As pressure increases within the retard cavities (2), the rotor and camshaft rotate counter clockwise
retarding valve timing.
3. As the duty cycle decreases, the spool is repositioned and oil is sent to the advance cavities (1), rotating
the rotor and camshaft clockwise, advancing valve timing.
l With a 0 percent duty cycle signal to the magnet, the spool is positioned in the fully extended
position and there is full flow to the advance cavities of the actuator. As duty cycle increases to
near 50 percent, flow to the advance cavities is decreased.

lunes, 28 de abril de 2025 03:13:14 p. m. Page 16 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l With a 50 percent duty cycle, the spool is positioned neutral, with no flow to either the advance and
retard cavities.
l With a 51-100 percent duty cycle, the spool is positioned to provide oil flow to retard cavities. As
the duty cycle increases, the flow to retard cavities increases.
l With a 100 percent duty cycle, there is full flow to the retard cavities of the actuator.
l The above duty cycle percentage values are only a guideline, as the actual duty cycle values may
vary based on engine oil temperature, solenoid magnet coil temperature, magnet coil resistance, and
other specifics.

CMP Actuator Park Position Verification

Fig. 15: CMP Actuator Park Position Verification

Courtesy of GENERAL MOTORS CORP.

The CMP actuator can be visually inspected to determine if the tension spring has returned the reluctor wheel
and rotor to the park position.

With the reluctor wheel returned to the proper parked position, the edge of the notched area of the wheel (2)

lunes, 28 de abril de 2025 03:13:14 p. m. Page 17 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

aligns with the marking (1) on the camshaft sprocket.

CMP Actuator Handling Safety

lunes, 28 de abril de 2025 03:13:14 p. m. Page 18 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 16: View Of Proper CMP Actuator Removal

lunes, 28 de abril de 2025 03:13:14 p. m. Page 19 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Courtesy of GENERAL MOTORS CORP.

WARNING: Refer to Camshaft Position Actuator Removal and Installation Warning .

Fig. 17: Retaining Reluctor Wheel To Sprocket

Courtesy of GENERAL MOTORS CORP.

Install tie wrap (1) to retain the reluctor wheel to the sprocket. The reluctor wheel is mounted to the actuator
body with 3 roll pins.

NEW PRODUCT INFORMATION (6.2L LS3)

The purpose of New Product Information is to highlight, or indicate, important product changes from the
previous model year.

Changes may include 1 or more of the following items:

lunes, 28 de abril de 2025 03:13:14 p. m. Page 20 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l Torque values and/or fastener tightening strategies

l Changed engine specifications
l New sealants and/or adhesives
l Disassembly and assembly procedure revisions
l Engine mechanical diagnostic procedure revisions
l New special tools required
l A component comparison from the previous year

Torque Values and/or Fastener Tightening Strategies

l All fasteners and threaded holes on the LS3 engine utilize metric threads.
l Certain fasteners should not be used again. Bolts, studs, or other fasteners that must be replaced, will be
called out in the specific service procedure.
l Refer to Fastener Tightening Specifications (6.2L LS3) or Fastener Tightening Specifications (6.2L
L99) .

New Sealants and/or Adhesives

Sealers and adhesives, as required, are identified within the specific service procedures. Refer to Adhesives,
Fluids, Lubricants, and Sealers .

Disassembly and Assembly Procedure Revisions

Disassembly and assembly repair procedures are provided for the LS3 application.

Engine Mechanical Diagnostic Procedure Revisions

All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for
repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The
diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Diagnostic
System Check - Vehicle .

New Special Tools Required

Special tools, as required for the LS3 application, are identified within the repair procedures. Refer to Special
Tools .

NEW PRODUCT INFORMATION (6.2L L99)

The purpose of New Product Information is to highlight, or indicate, important product changes from the
previous model year.

Changes may include 1 or more of the following items:

l Torque values and/or fastener tightening strategies

lunes, 28 de abril de 2025 03:13:14 p. m. Page 21 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l Changed engine specifications

l New sealants and/or adhesives
l Disassembly and assembly procedure revisions
l Engine mechanical diagnostic procedure revisions
l New special tools required
l A component comparison from the previous year

Torque Values and/or Fastener Tightening Strategies

l All fasteners and threaded holes on the L99 engine utilize metric threads.
l Certain fasteners should not be used again. Bolts, studs, or other fasteners that must be replaced, will be
called out in the specific service procedure.
l Refer to Fastener Tightening Specifications (6.2L LS3) or Fastener Tightening Specifications (6.2L
L99) .

New Sealants and/or Adhesives

Sealers and adhesives, as required, are identified within the specific service procedures. Refer to Adhesives,
Fluids, Lubricants, and Sealers .

Disassembly and Assembly Procedure Revisions

Disassembly and assembly repair procedures are provided for the L99 application.

Engine Mechanical Diagnostic Procedure Revisions

All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for
repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The
diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Diagnostic
System Check - Vehicle .

New Special Tools Required

Special tools, as required for the L99 application, are identified within the repair procedures. Refer to Special
Tools .

LUBRICATION DESCRIPTION (6.2L LS3)

lunes, 28 de abril de 2025 03:13:14 p. m. Page 22 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 18: Engine Lubrication Flow

Courtesy of GENERAL MOTORS CORP.

Callout Component Name

1 Upper Main Oil Galleries
2 Valve Lifters
3 Oil Pressure Sensor
4 Oil Pressure Relief Valve
5 Bypass Valve - Oil Cooler
6 Oil Filter
7 Engine Oil Cooler
8 Oil Pan Sump
9 Oil Pump Screen
10 Pressure Relief Valve - Oil Pump
11 Oil Pump
12 Crankshaft Bearings
13 Camshaft Bearings

lunes, 28 de abril de 2025 03:13:14 p. m. Page 23 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Engine lubrication is supplied by a gerotor type oil pump assembly (11). The pump is mounted on the front of
the engine block and driven directly by the crankshaft sprocket. The pump gears rotate and draw oil from the oil
pan sump (8) through a pick-up screen and pipe (9). The oil is pressurized as it passes through the pump and is
sent through the engine block lower oil gallery. Contained within the oil pump assembly is a pressure relief
valve (10) that maintains oil pressure within a specified range.

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter (6) where harmful
contaminants are removed. Oil exits the oil filter and is then directed to the external oil cooler (7). A bypass
valve (5) is incorporated into the oil cooler assembly in the event oil flow within the cooler is restricted. A
second valve, the active fuel management oil pressure relief valve (4) is incorporated into the oil pan. The active
fuel management oil pressure relief valve limits oil pressure to 379-517 kPa (55-75 psi) maximum.

Oil returns from the oil cooler and is directed to the upper main oil galleries (1). Oil from the left upper oil
gallery is directed to the crankshaft bearings (12) and camshaft bearings (13). Oil that has entered both the
upper main oil galleries also pressurizes the valve lifter assemblies (2) and is then pumped through the pushrods
to lubricate the valve rocker arms and valve stems. Oil returning to the pan is directed by the crankshaft oil
deflector. The oil pressure sensor (3) is located at the top rear of the engine.

LUBRICATION DESCRIPTION (6.2L L99)

lunes, 28 de abril de 2025 03:13:14 p. m. Page 24 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 19: Engine Lubrication Flow

Courtesy of GENERAL MOTORS CORP.

Callout Component Name

1 Upper Main Oil Galleries
2 Valve Lifter Oil Manifold
3 Valve Lifters
4 Oil Pressure Sensor
5 Bypass Valve - Oil Cooler
6 Oil Filter
7 Engine Oil Cooler
8 Oil Pan Sump
9 Oil Pump Screen
10 Pressure Relief Valve - Oil Pump
11 Oil Pump
12 Crankshaft Bearings
13 Camshaft Bearings

lunes, 28 de abril de 2025 03:13:14 p. m. Page 25 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

14 Camshaft
15 Camshaft Position Actuator

Engine lubrication is supplied by a gerotor type oil pump assembly (12). The pump is mounted on the front of
the engine block and driven directly by the crankshaft sprocket. The pump gears rotate and draw oil from the oil
pan sump (9) through a pick-up screen and pipe (10). The oil is pressurized as it passes through the pump and is
sent through the engine block lower oil gallery. Contained within the oil pump assembly is a pressure relief
valve (11) that maintains oil pressure within a specified range. Pressurized oil is directed through the engine
block lower oil gallery to the full flow oil filter (7) where harmful contaminants are removed. Oil exits the oil
filter and is then directed to the external oil cooler (8). A bypass valve (6) is incorporated into the oil cooler
assembly in the event oil flow within the cooler is restricted. A second valve, the active fuel management oil
pressure relief valve (5) is incorporated into the oil pan. The active fuel management oil pressure relief valve
limits oil pressure directed to the upper oil galleries and valve lifter oil manifold assembly to 379-517 kPa (55-
75 psi) maximum.

Oil exits the cooler (8) and is then directed to the upper main oil galleries and the valve lifter oil manifold
assembly (2). Oil from the left upper oil gallery is directed to the crankshaft (13) and camshaft (14) bearings.
Oil that has entered both the upper main oil galleries also pressurizes the valve lifter assemblies and is then
pumped through the pushrods to lubricate the valve rocker arms and valve stems.

An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil enters the
camshaft exiting at the front and into the camshaft position (CMP) actuator solenoid valve. The CMP actuator
solenoid valve spool position is controlled by the engine control module (ECM) and CMP magnet. When
commanded by the ECM, the CMP magnet repositions the CMP actuator solenoid valve spool directing
pressurized oil into the CMP actuator (15) to control valve timing. Refer to Camshaft Actuator System
Description and Camshaft Position Actuator and Solenoid Valve Description.

With active fuel management activated, the ECM commands the 4 solenoids to open, directing oil through the
engine block oil galleries to the intake and exhaust valve lifters for cylinders 1, 4, 6, and 7. Refer to Cylinder
Deactivation (Active Fuel Management) System Description.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor (4) is located at the
top rear of the engine.

LUBRICATION DESCRIPTION - MAIN PRESSURE BELOW 55 PSI WITH CYLINDER

DEACTIVATION (ACTIVE FUEL MANAGEMENT) OFF

lunes, 28 de abril de 2025 03:13:14 p. m. Page 26 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 20: Oil Flow

Courtesy of GENERAL MOTORS CORP.

Engine lubrication is supplied by a gerotor type oil pump assembly. The oil pump is mounted on the front of the
engine block and driven directly by the crankshaft sprocket. The pump gears rotate and draw oil from the oil
pan sump through a pick-up screen and pipe. The oil is pressurized as it passes through the pump and is sent
through the engine block lower oil gallery. Contained within the oil pump assembly is a pressure relief valve
that maintains oil pressure within a specified range.

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful
contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event
the filter becomes restricted. A second valve, the active fuel management oil pressure relief valve is
incorporated into the oil pan. The active fuel management oil pressure relief valve limits oil pressure directed to
the upper oil galleries and valve lifter oil manifold assembly to 379-517 kPa (55-75 psi) maximum. When main
oil pressure exceeds 379 kPa (55 psi), the oil pressure relief valve exhausts excess oil to the sump.

Oil exits the oil filter and into and through the external oil cooler. A bypass valve is incorporated into the oil
cooler in the event oil flow within the cooler is restricted. Oil exits the cooler and is directed to the upper main
oil galleries and the valve lifter oil manifold assembly. Oil from the left upper oil gallery is directed to the
crankshaft and camshaft bearings. Oil that has entered both the upper main oil galleries also pressurizes the

lunes, 28 de abril de 2025 03:13:14 p. m. Page 27 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

valve lifter assemblies and is then pumped through the pushrods to lubricate the valve rocker arms and valve
stems.

An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil enters the
camshaft exiting at the front and into the camshaft position (CMP) actuator solenoid valve. The CMP valve
spool position is controlled by the engine control module (ECM) and CMP magnet. When commanded by the
ECM, the CMP magnet repositions the CMP actuator solenoid valve spool directing pressurized oil into the
CMP actuator to control valve timing. Refer to Camshaft Actuator System Description and Camshaft
Position Actuator and Solenoid Valve Description.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top
rear of the engine.

With active fuel management deactivated, the ECM commands the 4 valve lifter oil manifold solenoids to
closed position to restrict oil flow to the intake and exhaust valve lifters for cylinders 1, 4, 6, and 7. Refer to
Cylinder Deactivation (Active Fuel Management) System Description.

LUBRICATION DESCRIPTION - MAIN PRESSURE ABOVE 55 PSI WITH CYLINDER

DEACTIVATION (ACTIVE FUEL MANAGEMENT) OFF

lunes, 28 de abril de 2025 03:13:14 p. m. Page 28 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 21: Oil Flow

Courtesy of GENERAL MOTORS CORP.

Engine lubrication is supplied by a gerotor type oil pump assembly. The oil pump is mounted on the front of the
engine block and driven directly by the crankshaft sprocket. The pump gears rotate and draw oil from the oil
pan sump through a pick-up screen and pipe. The oil is pressurized as it passes through the pump and is sent
through the engine block lower oil gallery. Contained within the oil pump assembly is a pressure relief valve
that maintains oil pressure within a specified range.

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful
contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event
the filter becomes restricted. A second valve, the active fuel management oil pressure relief valve is
incorporated into the oil pan. The active fuel management oil pressure relief valve limits oil pressure directed to
the upper oil galleries and valve lifter oil manifold assembly to 379-517 kPa (55-75 psi) maximum. When main
oil pressure exceeds 379 kPa (55 psi), the oil pressure relief valve exhausts excess oil to the sump.

Oil exits the oil filter and into and through the external oil cooler. A bypass valve is incorporated into the oil
cooler in the event oil flow within the cooler is restricted. Oil exits the cooler and is directed to the upper main
oil galleries and the valve lifter oil manifold assembly. Oil from the left upper oil gallery is directed to the
crankshaft and camshaft bearings. Oil that has entered both the upper main oil galleries also pressurizes the
valve lifter assemblies and is then pumped through the pushrods to lubricate the valve rocker arms and valve
stems.

An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil enters the
camshaft exiting at the front and into the camshaft position (CMP) actuator solenoid valve. The CMP valve
spool position is controlled by the engine control module (ECM) and CMP magnet. When commanded by the
ECM, the CMP magnet repositions the CMP actuator solenoid valve spool directing pressurized oil into the
CMP actuator to control valve timing. Refer to Camshaft Actuator System Description and Camshaft
Position Actuator and Solenoid Valve Description.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top
rear of the engine.

With active fuel management deactivated, the ECM commands the 4 valve lifter oil manifold solenoids to
closed position to restrict oil flow to the intake and exhaust valve lifters for cylinders 1, 4, 6, and 7. Refer to
Cylinder Deactivation (Active Fuel Management) System Description.

LUBRICATION DESCRIPTION - MAIN PRESSURE BELOW 55 PSI WITH CYLINDER

DEACTIVATION (ACTIVE FUEL MANAGEMENT) ON

lunes, 28 de abril de 2025 03:13:14 p. m. Page 29 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 22: Oil Flow

Courtesy of GENERAL MOTORS CORP.

Engine lubrication is supplied by a gerotor type oil pump assembly. The oil pump is mounted on the front of the
engine block and driven directly by the crankshaft sprocket. The pump gears rotate and draw oil from the oil
pan sump through a pick-up screen and pipe. The oil is pressurized as it passes through the pump and is sent
through the engine block lower oil gallery. Contained within the oil pump assembly is a pressure relief valve
that maintains oil pressure within a specified range.

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful
contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event
the filter becomes restricted. A second valve, the active fuel management oil pressure relief valve is
incorporated into the oil pan. The active fuel management oil pressure relief valve limits oil pressure directed to
the upper oil galleries and valve lifter oil manifold assembly to 379-517 kPa (55-75 psi) maximum. When main
oil pressure exceeds 379 kPa (55 psi), the oil pressure relief valve exhausts excess oil to the sump.

Oil exits the oil filter and into and through the external oil cooler. A bypass valve is incorporated into the oil
cooler in the event oil flow within the cooler is restricted. Oil exits the cooler and is directed to the upper main
oil galleries and the valve lifter oil manifold assembly. Oil from the left upper oil gallery is directed to the
crankshaft and camshaft bearings. Oil that has entered both the upper main oil galleries also pressurizes the

lunes, 28 de abril de 2025 03:13:14 p. m. Page 30 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

valve lifter assemblies and is then pumped through the pushrods to lubricate the valve rocker arms and valve
stems.

An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil enters the
camshaft exiting at the front and into the camshaft position (CMP) actuator solenoid valve. The CMP valve
spool position is controlled by the engine control module (ECM) and CMP magnet. When commanded by the
ECM, the CMP magnet repositions the CMP actuator solenoid valve spool directing pressurized oil into the
CMP actuator to control valve timing. Refer to Camshaft Actuator System Description and Camshaft
Position Actuator and Solenoid Valve Description.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top
rear of the engine.

With active fuel management activated, the ECM commands the 4 valve lifter oil manifold solenoids to open
directing oil through the engine block oil galleries to the intake and exhaust valve lifters for cylinders 1, 4, 6,
and 7. Refer to Cylinder Deactivation (Active Fuel Management) System Description.

LUBRICATION DESCRIPTION - MAIN PRESSURE ABOVE 55 PSI WITH CYLINDER

DEACTIVATION (ACTIVE FUEL MANAGEMENT) ON

lunes, 28 de abril de 2025 03:13:14 p. m. Page 31 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

Fig. 23: Oil Flow

Courtesy of GENERAL MOTORS CORP.

Engine lubrication is supplied by a gerotor type oil pump assembly. The oil pump is mounted on the front of the
engine block and driven directly by the crankshaft sprocket. The pump gears rotate and draw oil from the oil
pan sump through a pick-up screen and pipe. The oil is pressurized as it passes through the pump and is sent
through the engine block lower oil gallery. Contained within the oil pump assembly is a pressure relief valve
that maintains oil pressure within a specified range.

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful
contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event
the filter becomes restricted. A second valve, the active fuel management oil pressure relief valve is
incorporated into the oil pan. The active fuel management oil pressure relief valve limits oil pressure directed to
the upper oil galleries and valve lifter oil assembly to 379-517 kPa (55-75 psi) maximum. When main oil
pressure exceeds 379 kPa (55 psi), the oil pressure relief valve exhausts excess oil to the sump.

Oil exits the oil filter and into and through the external oil cooler. A bypass valve is incorporated into the oil
cooler in the event oil flow within the cooler is restricted. Oil exits the cooler and is directed to the upper main
oil galleries and the valve lifter oil manifold assembly. Oil from the left upper oil gallery is directed to the
crankshaft and camshaft bearings. Oil that has entered both the upper main oil galleries also pressurizes the
valve lifter assemblies and is then pumped through the pushrods to lubricate the valve rocker arms and valve
stems.

An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil enters the
camshaft exiting at the front and into the camshaft position (CMP) actuator solenoid valve. The CMP valve
spool position is controlled by the engine control module (ECM) and CMP magnet. When commanded by the
ECM, the CMP magnet repositions the CMP actuator solenoid valve spool directing pressurized oil into the
CMP actuator to control valve timing. Refer to Camshaft Actuator System Description and Camshaft
Position Actuator and Solenoid Valve Description.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top
rear of the engine.

With active fuel management activated, the ECM commands the 4 valve lifter oil manifold solenoids to open,
directing oil through the engine block oil galleries to the intake and exhaust valve lifters for cylinders 1, 4, 6,
and 7. Refer to Cylinder Deactivation (Active Fuel Management) System Description.

CLEANLINESS AND CARE

l Throughout this section, it should be understood that proper cleaning and protection of machined surfaces
and friction areas is part of the repair procedure. This is considered standard shop practice even if not
specifically stated.
l When any internal engine parts are serviced, care and cleanliness is important.
l When components are removed for service, they should be marked, organized or retained in a specific
order for assembly. Refer to Separating Parts.
l At the time of installation, components should be installed in the same location and with the same mating
surface as when removed.

lunes, 28 de abril de 2025 03:13:15 p. m. Page 32 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l An automobile engine is a combination of many machined, honed, polished and lapped surfaces with
tolerances that are measured in millimeters or thousandths of an inch. These surfaces should be covered
or protected to avoid component damage.
l A liberal coating of clean engine oil should be applied to friction areas during assembly.
l Proper lubrication will protect and lubricate friction surfaces during initial operation.

SEPARATING PARTS

IMPORTANT: l Many internal engine components will develop specific wear patterns on
their friction surfaces.
l When disassembling the engine, internal components MUST be
separated, marked, or organized in a way to ensure installation to their
original location and position.

Separate, mark, or organize the following components:

l Piston and the piston pin

l Piston to the specific cylinder bore
l Piston rings to the piston
l Connecting rod location and orientation to the crankshaft journal
l Connecting rod to the bearing cap

A paint stick or etching/engraving type tool are recommended. Stamping the connecting rod or cap near
the bearing bore may affect component geometry.

l Crankshaft main and connecting rod bearings

l Camshaft and valve lifters
l Valve lifters, lifter guides, pushrods and rocker arm assemblies
l Valve to the valve guide
l Valve spring to the cylinder head location
l Engine block main bearing cap location and direction
l Oil pump drive and driven gears

REPLACING ENGINE GASKETS

Special Tools

J 28410: Gasket Remover

For equivalent regional tools, refer to Special Tools

Gasket Use and Applying Sealants

lunes, 28 de abril de 2025 03:13:15 p. m. Page 33 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l Do not use any gasket again unless specified.

l Gaskets that can be used again will be identified in the service procedure.
l Do not apply sealant to any gasket or sealing surface unless called out in the service information.

Separating Components

l Use a rubber mallet to separate components.

l Bump the part sideways to loosen the components.
l Bumping should be done at bends or reinforced areas to prevent distortion of parts.

Cleaning Gasket Surfaces

l Remove all gasket and sealing material from the part using the J 28410: remover or equivalent.
l Care must be used to avoid gouging or scraping the sealing surfaces.
l Do not use any other method or technique to remove sealant or gasket material from a part.
l Do not use abrasive pads, sand paper, or power tools to clean the gasket surfaces.
¡ These methods of cleaning can cause damage to the component sealing surfaces.

¡ Abrasive pads also produce a fine grit that the oil filter cannot remove from the oil.

¡ This grit is abrasive and has been known to cause internal engine damage.

Assembling Components

CAUTION: Refer to Sealant Caution .

l When assembling components, use only the sealant specified or equivalent in the service procedure.
l Sealing surfaces should be clean and free of debris or oil.
l Specific components such as crankshaft oil seals or valve stem oil seals may require lubrication during
assembly.
l Components requiring lubrication will be identified in the service procedure.
l When applying sealant to a component, apply the amount specified in the service procedure.
l Tighten bolts to specifications. Do not overtighten.

USE OF ROOM TEMPERATURE VULCANIZING (RTV) AND ANAEROBIC SEALANT

Pipe Joint Compound

NOTE: Three types of sealer are commonly used in engines. These are room
temperature vulcanizing (RTV) sealer, anaerobic gasket eliminator sealer, and
pipe joint compound. The correct sealer and amount must be used in the proper
location to prevent oil leaks. DO NOT interchange the 3 types of sealers. Use
only the specific sealer or the equivalent as recommended in the service
procedure.

lunes, 28 de abril de 2025 03:13:15 p. m. Page 34 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l Pipe joint compound is a pliable sealer that does not completely harden. This type of sealer is used where
2 non-rigid parts, such as the oil pan and the engine block, are assembled together.
l Do not use pipe joint compound in areas where extreme temperatures are expected. These areas include:
exhaust manifold, head gasket, or other surfaces where gasket eliminator is specified.
l Follow all safety recommendations and directions that are on the container.

To remove the sealant or the gasket material, refer to Replacing Engine Gaskets.

CAUTION: Refer to Sealant Caution .

l Apply the pipe joint compound to a clean surface. Use a bead size or quantity as specified in the
procedure. Run the bead to the inside of any bolt holes.
l Apply a continuous bead of pipe joint compound to one sealing surface. Sealing surfaces to be resealed
must be clean and dry.
l Tighten the bolts to specifications. Do not overtighten.

RTV Sealer

l RTV sealant hardens when exposed to air. This type of sealer is used where 2 non-rigid parts, such as the
intake manifold and the engine block, are assembled together.
l Do not use RTV sealant in areas where extreme temperatures are expected. These areas include: exhaust
manifold, head gasket, or other surfaces where a gasket eliminator is specified.
l Follow all safety recommendations and directions that are on the container.

To remove the sealant or the gasket material, refer to Replacing Engine Gaskets.

CAUTION: Refer to Sealant Caution .

l Apply RTV sealant to a clean surface. Use a bead size as specified in the procedure. Run the bead to the
inside of any bolt holes.
l Assemble components while the RTV sealant is still wet, within 3 minutes. Do not wait for the RTV
sealant to skin over.
l Tighten bolts to specifications. Do not overtighten.

Anaerobic Sealer

l Anaerobic gasket eliminator hardens in the absence of air. This type of sealer is used where 2 rigid parts,
such as castings, are assembled together. When 2 rigid parts are disassembled and no sealer or gasket is
readily noticeable, the parts were probably assembled using a gasket eliminator.
l Follow all safety recommendations and directions that are on the container.

To remove the sealant or the gasket material, refer to Replacing Engine Gaskets.

lunes, 28 de abril de 2025 03:13:15 p. m. Page 35 © 2011 Mitchell Repair Information Company, LLC.
 2010 Chevrolet Camaro LT
2010 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Camaro

l Apply a continuous bead of gasket eliminator to one flange. Surfaces to be sealed must be clean and dry.

CAUTION: Refer to Sealant Caution .

l Spread the sealer evenly with your finger to get a uniform coating on the sealing surface.

NOTE: Anaerobic sealed joints that are partially torqued and allowed to cure more
than 5 minutes may result in incorrect shimming and sealing of the joint.

l Tighten bolts to specifications. Do not overtighten.

l After properly tightening the fasteners, remove the excess sealer from the outside of the joint.

TOOLS AND EQUIPMENT

Special tools are listed and illustrated throughout this section, with a complete listing at the end of the section.
These tools, or their equivalents, are specially designed to quickly and safely accomplish the operations for
which they are intended. The use of these special tools also minimize possible damage to engine components.
Some precision measuring tools are required for inspection of certain critical components. Torque wrenches and
a torque angle meter are necessary for the proper tightening of various fasteners.

To properly service the engine assembly, the following items should be readily available:

l Approved eye protection and safety gloves

l A clean, well lit, work area
l A suitable parts cleaning tank
l A compressed air supply
l Trays or storage containers to keep parts and fasteners organized
l An adequate set of hand tools
l Approved engine repair stand
l An approved engine lifting device that will adequately support the weight of the components

lunes, 28 de abril de 2025 03:13:15 p. m. Page 36 © 2011 Mitchell Repair Information Company, LLC.