Question:

2004 gmc sierra stuck on defrost

by Guest5853  |  12 years, 7 month(s) ago

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I've recently changed the battery the air vents worked properly before.

 Tags: 2004, Defrost, GMC, Sierra, stuck

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  1. amomipais82
    Hi,
    Try this actuator recalibration procedure......
    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

    Try this..... it SHOULD work
    Good Luck

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