22-NA-052

Bulletin No.:
Service Bulletin
Date:
22-NA-052
March, 2022
TECHNICAL
Subject:
Diagnostic Trouble Code (DTC) B1038.64 Set in Body Control Module (BCM) and Door
Ajar Message on Driver Information Center (DIC)
Brand:
Model:
Buick
Envision
Model Year:
VIN Breakpoint:
from
to
2021
2022
2021
2022
from
to
—
—
Engine:
Transmission:
—
—
CT5
Cadillac
Escalade
Escalade
ESV
Corvette
Chevrolet
Suburban
2021
2022
2021
2022
Tahoe
GMC
Yukon
Yukon XL
Involved Region or Country
North America, Australia/New Zealand
Condition
Some customers may comment on the door latches being inoperable.
Cause
The cause of the condition may be a possible internal fault within the body control
module (BCM).
Correction
Important: Do Not replace the door latch assembly-driver.
Engineering is investigating a BCM software improvement to address this concern. Until
a software update is available, power off the vehicle and remove the fuses for VBATT01
and VBATT02 together for 5 minutes to reset the BCM. After reinstalling the fuses, clear
all DTCs with the scan tool and confirm DTC B1038.64 has not returned.
Note: If the DTC returns, follow normal SI diagnostics.
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.
Version
1
Modified
Released March 03, 2022
Labor
Operation
2888468*
Description
Labor Time
Global Battery Reset and
Code Clear
0.6 hr
*This is a unique Labor Operation for bulletin use only.
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.
Copyright 2022 General Motors LLC. All Rights Reserved.
WE SUPPORT VOLUNTARY
TECHNICIAN
CERTIFICATION