Sierra Denali RWD V8-6.2L (2009)
Amplifier: Customer Interest
Audio System - No Audio/Door Chime/Turn Signal Indicator
TECHNICAL
Bulletin No.: 08-08-44-031A
Date: March 24, 2009
Subject:
No Audio from Radio, Door Ajar Chime and Turn Signal Click Clack Inoperative During a Key Cycle - Audio Returns After Vehicle is Turned Off For
Several Minutes (Reprogram Audio Amplifier)
Models:
2008-2009 Cadillac CTS, Escalade Models, SRX
2009 Chevrolet Avalanche, Tahoe, Suburban LTZ
2008-2009 GMC Sierra Denali, Yukon Denali Models
2009 GMC Yukon, Yukon XL
2008-2009 HUMMER H2 Models
with Luxury Edition Package (RPO Y91) or Premium Audio Speaker System with Surround Amplifier (RPO UQS)
Attention:
This bulletin only applies to vehicles with amplifier part numbers 25921142, 25924299, 25926541, 25939528 and 25939529.
Supercede:
This bulletin is being revised to update models, model years and the service procedure. Please discard Corporate Bulletin Number 08-08-44-031
(Section 08 -- Body and Accessories).
Condition
Some customers may comment on the following concerns during a key cycle. The audio returns after the vehicle is turned off for several minutes (10
minutes or more). This allows the amplifier to shut down completely and reset.
-
No audio from the radio.
-
Door ajar chime inoperative.
-
Turn signal click clack sound inoperative.
Cause
These conditions may be caused by a software anomaly.
Correction
