Bulletin No.

: 17-NA-211
Date: Aug-2017

Subject: Diagnostic Tip for Malfunction Indicator Lamp (MIL) Illuminated - DTC U0101 Set

This Bulletin replaces PIP4990D. Please discard PIP4990D.

Brand: Model: Model Year: VIN: Engine: Transmission:

from to from to

Buick Allure 2010 2011 LAF, LDK, LE5, MH7, MH8, MHH
LEA, LUK

Cascada 2016 2018 LWC MH7

Encore 2013 2018 2HO, LUJ, LUV MH8, MHB, MNH,

MHK

LaCrosse 2010 2016 LAF, LDK, LE5, MH7, MH8, MHH

LEA, LUK

Regal 2011 2017 LAF, LEA, LHU, MH7, MH8, MHH,

LTG, LUK MHK

Verano 2012 2017 LEA, LHU MH7, MH8, MHK

Chevrolet Cruze 2011 2018 2HO, LDD, LDE, MH7, MH8, MHK
LDU, LFH, LFJ,
LGE, LHU, LHJ,
LLU, LUV, LUW,
LWE, LXV

Equinox 2010 2017 LAF, LEA MH7, MHC, MHK

Malibu 2008 2018 LCV, LFU, LTG, MNH

LKW

Orlando 2012 2017 LAF, LEA MH8

Sonic 2012 2018 LDC, LDD, LDE, M2A, MH8, MH9

LED, LFJ, LNZ,
LCU, LSF, LWD,
LUV, LUW, LW3

1
 Trax 2013 2018 LE2, LUJ, LUV MH8,MHB, MNH,
MNK

GMC Terrain 2010 2018 LAF, LEA MH7, MHC

Pontiac G6 2010 2010 LE5, LE9 MH8

Saturn Aura 2009 2009 LAT, LES MH8

Involved Region or Country North America, South America, Middle East, Israel

Condition Some customers may comment that the MIL is illuminated.

The technician may find DTC U0101 set.

Information Be sure to review the appropriate SI diagnostics for DTC U0101.

If calling TAC for assistance, have all codes in the vehicle and which modules they are set in ready
when calling.
Prior to any parts replaced, there are several areas that should be inspected:

⇒ Check underhood fuse block for damaged terminals or poor terminal fit and mis-postioned
fuses in the fuse block.
⇒ Inspect the TEHCM grounds - refer to SI Automatic Transmission Controls Schematics to
determine the ground identification (G106, G107, etc.) then the master electrical component
list to determine the location of the ground.
⇒ Powers and grounds should always be load checked to make sure the circuits are able to work
properly.
⇒ Check the harness for rubbing through on any sharp objects mainly on top of the transmission
where harness can contact sharp area on the block.
⇒ Inspection of the transmission connector pins for damaged terminals or poor terminal fit. After
inspection is complete, reconnect using dielectric grease.

Parts Information
No parts are required for this repair.

Version 2

Modified September 05, 2017 - Added Trax, G6 and Aura Models and updated Models to 2018.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions
that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the
equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin
applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION