TrailBlazer 4WD L6-4.2L VIN S (2002)
Air Door Actuator / Motor: Customer Interest
A/C - Clicking Noises From The Instrument Panel
Bulletin No.: 04-01-38-002
Date: January 22, 2004
TECHNICAL
Subject:
Clicking Noise From Instrument Panel After Vehicle is Started (Replace HVAC Mode Actuator)
Models:
2002 Chevrolet TrailBlazer, TrailBlazer EXT
2002 GMC Envoy, Envoy XL
2002 Oldsmobile Bravada
Condition
Some customers may comment on a clicking noise coming from the instrument panel after the vehicle is started.
Cause
This concern may be caused by an internal failure in the HVAC (heating, ventilation and air conditioning) mode door actuator.
Correction
Technicians are to replace the HVAC mode door actuator with an updated design part as listed below. Refer to the Mode Actuator Replacement
procedure in the HVAC section of SI.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table.
