Question about 2005 GMC Yukon Xl Denali

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The A/C not working in yukon xl 2004

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  • vip_fighter Mar 15, 2009

    dave, you are 100% Apprentice
    your solution fixed my a/c problems and other problems to ^-^
    thanx

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  • 11 Answers

If----If everything was working great just prior to replacing the battery...In a desperate attempt--just kidding.

I would disconnect the battery
touch the battery's neg & B+ cable ends together.
This discharges capacitors.
Walk away for a few minutes, reconnect the battery and test HVAC functions to see if all is well.

If not.
The GM Dealer's Scanner can recalibrate the AC/ heater Actuators.
Note - Actuators do go bad, there are several in your truck.

Good Luck

Let us know

Dave

Posted on Mar 13, 2009

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