Bulletin No.: PIT6379C

Service Bulletin

Date: August, 2025

PRELIMINARY INFORMATION
Subject:
Brand:

Radio Stability Issues After Carplay Use
Model:

Model Year:
from

VIN:
to

from

Engine:

Transmission:

to

Cadillac

CT5

2025

All

All

All

All

Chevrolet

Colorado

2025

All

All

All

All

GMC

Canyon

2025

All

All

All

All

Involved Region or Country

United States, Canada, Mexico, Europe, Uzbekistan, Middle East, Israel, Palestine,
Bolivia (West), Chile (West), Colombia (West), Ecuador (West), Peru (West), China
GMPI, Philippines, Australia/New Zealand

Additional Options (RPO)

IVD or IVE

Copyright 2025 General Motors. All Rights Reserved.

Page 2

August, 2025

Bulletin No.: PIT6379C

A customer may comment that after using CarPlay their radio has stability issues. These
could include:
• Intermittent blank radio screen with HVAC and vehicle controls still showing
• CarPlay audio may stop or disconnect
• Rebooting of the radio
• Slow to boot – including seeing “Android is Starting” on the radio
• Message below about storage space
• Performing a factory reset – including losing radio favorites and phone pairings

Condition

6932358

Cause

This may be due to a software anomaly

Correction
Note: If the radio software is not on W36E-179.1.2-M174-SQBR6-151.2, this PI does not apply and normal
diagnostics should be performed.
To find the software version, go to: Settings\System\About\Build Info
If the vehicle software is current at W36E-179.1.2-M174-SQBR6-151.2 DO NOT replace ANY parts for this concern.
Check the System memory to see if it is close to full: Settings\System\S

Bulletin No.: PIT6379C

August, 2025

Page 3

6932357

To temporarily recover storage/memory space for the customer, perform a reset using the Steering Wheel Controls:
1.1.1) Vehicle must be in Park to reboot your system.
1.1.2) Press and hold the END CALL button on steering wheel for about 15 seconds. Until the center screen turns
black, then release the END CALL button.
1.1.3) After approx. 5-10 seconds, you will see the welcome screen and your infotainment system will reboot itself.
Please inform them that this is due to a software anomaly.
In the meantime, please advise customer they may continue to drive the vehicle.
The PI will be updated or replaced with TSB once a determination has been made.

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
*3480798

Description
Verify radio has stability
issues after using Car Play
with specific software and
performing radio reset

Labor Time
0.5 Hr.

*This is a unique Labor Operation for Bulletin use only.

Page 4

August, 2025

Bulletin No.: PIT6379C

Version

4

Modified

05/15/2025 Created on.
07/11/2025 - Updated Models.
07/16/2025 - Updated Models.
08/14/2025 - Updated to remove S. Korea from Involved Regions.

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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