2004 GMC Sierra A/C door actuator

Tiny
WLDBIL1
  • MEMBER
  • 2004 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 37,000 MILES
I just got a new A/C door actuator but when I hooked it up, it does'nt seem to work and I still get hot air out the middle dash vent and cold air out the passenger vent when the A/C is turned on.
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Monday, July 13th, 2009 AT 3:02 PM

1 Reply

Tiny
BRIAN 1
  • MEMBER
Because the actuator has to be re calibrated. Try this first, Clear all DTCs.
Place the ignition switch to the OFF position.
Install the HVAC actuator.
Connect all previously disconnected components.
Remove the HVAC/ECAS fuse for a minimum of 10 seconds.
Install the HVAC/ECAS fuse.
Start the vehicle.
Wait 40 seconds for the HVAC control module to self-calibrate.
Verify that no DTCs have set as current DTCs.
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Monday, July 13th, 2009 AT 6:14 PM

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