Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner
1 - 2 of 2 Posts

·
Registered
2004 chevy trailblazer_ls
Joined
·
19 Posts
Discussion Starter · #1 ·
Seems my climate control isn't working properly. It looks and feel like its stuck on blowing through the defroster and the floor only. No matter where the selector switch is. Not to positive that the temp change for the pasenger side is working either. And I get no illumination for the passenger temp either. I pulled out the controls and both harness are fully seated.

Replace the unit? Or is there somewhere else I could be looking?
 

·
Banned
2004 gmc
Joined
·
26,181 Posts
Could be a bad control module or multiple bad actuators. For now, just pull the HVAC-B fuse #36 in the rear fuse block for 30 seconds. Put it back, then turn the ignition on but don't start the car. For the next 90 seconds, listen as the control module puts the actuators through their paces and recalibrates them. 50-50 chance that's all it will take to get it back. Let us know if you hear the actuators moving about.
 
1 - 2 of 2 Posts
Top