How do I get my Air to work or find and replace my center blend door on my 08 Yukon Denali

ID Status Date Year Make Model Transmission Type A/C Controls Public/Private
#14416 Closed 2008 GMC Yukon Denali public

Air not working stuck only on defrost blowing hot air even set @ 60°I have the digital display with auto settings

Sparky

I am providing the recalibration procedure for your vehicle without a scan tool. I would recommend trying it a few time to see if you can correct the condition. If you do not have success you will likely need to replace some actuators.

Important:  Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

Alternate Method (w/o Scan Tool)

  1. Place the ignition switch to the OFF position.
  2. Remove the HVAC BATT  fuse #39 in the underhood fuse box for a minimum of 10 seconds.
  3. Install the HVAC BATT fuse.
  4. Start the vehicle.
  5. Wait at least 40 seconds for the HVAC control module to self-calibrate.
  6. Turn the ignition off for at least 10 seconds but no longer than 30 seconds.
  7. Restart the engine and test the controls.

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