20NA118

Service Bulletin
Bulletin No.:
20-NA-118
Date:
June, 2020
TECHNICAL
Subject:
Possible OnStar Notification, Malfunction Indicator Lamp (MIL) Illuminated, ABS/TCS
Lamp On - DTC C0010.5A Set
Brand:
Model:
Buick
Cadillac
Chevrolet
GMC
Model Year:
VIN:
Engine:
Transmission:
All
All
All
from
to
from
to
Envision
2018
2020
All
SRX
2010
2016
All
All
All
All
Colorado
2018
2020
All
All
All
All
Equinox
2015
2020
All
All
All
All
Canyon
2018
2020
All
All
All
All
Terrain
2015
2020
All
All
All
All
Involved Region or Country
North America, Europe, Russia, Middle East, Iraq, Israel, Palestine, Argentina
(Mercosur), Brazil (Mercosur), Chile (West), Colombia (West), Ecuador (West), Paraguay
(West), Peru (West), Uruguay (West), Japan, Cadillac Korea (South Korea), GM Korea
Company, China - SGM, Taiwan , Thailand (ASEAN), Egypt, Other Africa
Condition
Some customers may comment on one or more of the following conditions:
• MIL illuminated
• ABS/TCS lamp on
• Possible OnStar notification
Some technicians may find DTC C0010.5A stored in the Electronic Brake Control
Module (EBCM).
Cause
The diagnostic setting a false C0010.5A uses transmission estimated gear. The status of
this signal changes with the shift selector, not the transmission. This makes it possible to
shift to Reverse while coasting forward. It is a very rare or unusual set of conditions which
will falsely set this code. The driver must be coasting in one direction (above 10 KPH),
place the shift selection in the opposite direction for more than 1 second without hitting
the accelerator pedal in order to set this code.
Correction
If the code C0010.5A is the only code stored, clear the code and road test. This issue is
caused by the driver’s habits that can falsely trip this code. Explain to the driver how they
did this. DO NOT re-flash the EBCM software. This will not correct the issue. Informing
the driver not to shift to the opposite direction, without stopping, will help avoid the issue.
Parts Information
No parts are required for this repair.
Copyright 2020 General Motors LLC. All Rights Reserved.
Page 2
June, 2020
Bulletin No.: 20-NA-118
Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor Operation
Description
Labor Time
2486098*
Clear EBCM C0010.5A and Test Drive
0.3 hr
*This is a unique Labor Operation for Bulletin use only.
Version
1
Modified
Released June 03, 2020
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.
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