A/C/Audio System - Rear A/C, Audio Inoperative
Bulletin No.: 03-08-44-018CDate: January 09, 2006
TECHNICAL
Subject:
Rear Seat Audio (RSA) and/or Rear HVAC Inoperative (Replace RSA Module)
Models:
2003-2006 Cadillac Escalade, Escalade ESV, Escalade EXT
2003-2006 Chevrolet Avalanche, Silverado Crew Cab, Suburban, Tahoe
2003-2006 GMC Sierra Crew Cab, Sierra Denali, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL
2003-2006 HUMMER H2
with Rear Seat Radio Control (RPO UK6)
Supercede:
This bulletin is being revised to add 2006 model year vehicles. Please discard Advanced SI Resolution Bulletin Number 03-08-44-018B (Section 08 - Body and Accessories).
Condition
Some customers may comment that the Rear Seat Audio (RSA) or the rear HVAC controls are inoperative. The display will be blank and there is no communication to the RSA/HVAC module.
Cause
A microcontroller was found to lock up causing an "ALDL No ALDL" communication condition. This required the cycling of power by disconnecting/reconnecting the RSA module.
Correction
Replace the RSA module to correct this condition. The RSA module has been updated to eliminate the "HVAC No ALDL" communication concern.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer