Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Does it make a difference if you have the blower on floor, vent, or defrost?
Verify that the Mode button is not set to Floor, Defog, or Defrost. Recirculation is inhibited in these modes and the light just blinks and turns off.
Is the AC blowing hot also?
Here is the operation description from GM.
If it never switches from dash vent then I think you might still have a door operation problem. There is a recirculation door actuator, a mode door, and a temperature blend door on this car.
Is there any way you could get the computer scanned for HVAC trouble codes. It's possible a mode position re-learn could solve the issue rather than changing out parts. This can be done with a Snap-on Solus, or a Tech 2.
Yeah, maybe they can pull some codes. After you installed the blend door did you reset the system? That also might do the trick. Disconnect the battery, cross the cables for 30 seconds and then hook the battery back up. It might make the HVAC module re-calibrate, but it will also clear any codes that are stored.
Sort of. Touch the cables together for about thirty seconds. Do not connect them to the battery at all while doing this. After thirty seconds all of the modules will reset and you can hook the battery back up as usual.
I have seen it solve a number of problems on GM vehicles after replacing certain parts. Let me know if I can be of any other assistance.
Something is out of whack in the HVAC controls. I'll do some more research and get back with you in the morning.
I think you may have to re-calibrate the HVAC control motors. It will require a compatible scan tool.
A Snap-on Solus, or a Tech 2 will work.
I just wanted to check in and see if you needed any additional information. I hope that I have been of some assistance and would appreciate a positive rating if it have. Thanks!
Ok. Thanks! I hope you get settled nicely.
Those control panels don't go out very often. The blend door actuators sure do... I hope you get it working.
That's great that you got it going! I hope I have been some assistance and I would love to help again in the future.