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2004 GMC Envoy Question: i am replacing one front and 2 rear door blend actuators what do i need to do.



halfonso, Belvidere, IL, July 13, 2013, 12:27

from what i heard i need to do a procedure to re calibrate the car computer

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  • Answer #1

    Real Auto Haus (111 Answers) , Westmont, IL - (630) 361-6756
    TristanReal July 13, 2013, 12:43

    Alternate Method (w/o Scan Tool)

    Clear all DTCs.
    Place the ignition switch to the OFF position.
    Install the HVAC actuator.
    Connect all previously disconnected components.
    Remove the HVAC B fuse for a minimum of 10 seconds.
    Install the HVAC B fuse.
    Start the vehicle.
    Wait 40 seconds for the HVAC control module to self-calibrate.
    Verify that no DTCs have set as current DTCs.

    hope this helps

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