Express 3/4 Ton Van V8-4.8L VIN V (2003)
Instrument Panel Control Module: Customer Interest
Audio System - No Audio From Speakers At Times
File In Section: 08 - Body and Accessories
Bulletin No.: 02-08-44-020B
Date: March, 2003
TECHNICAL
Subject:
No Audio Out of Speakers At Times
(Reprogram Radio and/or Replace Amplifier)
Models:
2003 Cadillac Escalade, Escalade EXT
2003 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe
2003 GMC Savana, Sierra, Sierra Denali, Yukon, Yukon Denali, Yukon XL,
Yukon Denali XL
2003 HUMMER H2
This bulletin is being revised to clarify the models and the approved repair procedure.
Please discard Corporate Bulletin Number 02-08-44-020A (Section 08 - Body and Accessories).
Condition
Some customers may comment that at times there is no audio out of any speakers. However, on the next key cycle the audio system may perform
properly.
Cause
An anomaly within the amplifier/radio operating systems may cause this condition.
Correction
Important:
Pay particular attention to this correction procedure, it is somewhat complicated. The repair varies based on the vehicle sound system. Refer to the
Service Parts Identification (SPID) Label of the vehicle being repaired. The type of sound system in the vehicle will determine the repair procedure.
1.
Determine the regular production option (RPO) code of the sound system in the vehicle from the SPID label.
2.
Install the Tech 2(R) to the vehicle DLC and determine the part number of the radio software and the amplifier part number.
