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  1. #1

    Default 2003 GMC Envoy AC Problems

    I have a 03 gmc envoy and the ac blows cold on the driverside and hot on the passengerside. I disconnected the battery and when I connected it this problem occurred.

  2. #2


    Welcome to the club man, I don't know what to tell you with your vent problem but I'm sure you will find the answer on here. Good to have you here.

    2002 Chevrolet Silverado Extended Cab SportSide: See Mods in My Garage

  3. #3


    welcome to the club and unfortunately like donyms i cant help you hopefully some one will come along that can
    Go-Recon "xtreme" amber scanning tail gate light strip, Cobra ultra2 CB radio W/ 4 foot firestix antennas, dual exhaust with 40 series single in dual out muffler, 305/65R17 Mickey Thomson Baja ATZ on 17 inch Mickey Thompson Side Biters, 3 inch body lift

    "when the going gets tough the tough get cyclic:fighting0019:"
    "use the force luke:fighting0040:"

  4. #4


    sounds to me like the baffle that controls airflow some how get stuck between positions when you disconnected from the battery. not sure how you would go about fixing it......

    try googling it.


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

  5. #5


    Thanks to all of you. I will try the baffle. I found the actuator, but it's in a bad location.

  6. #6


    I have a 03 gmc envoy and the ac blows cold on the driverside and hot on the passengerside. I disconnected the battery and when I connected it this problem occurred.

  7. #7


    Ok james, as suggested above, the problem is the passenger side temperature actuator. It either failed when the battery was reconnected, or it did not reset it'self.

    I had an '05 Envoy and I had an actuator problem after I reconnected the battery. In my case, it did not reset. I was able to get it to reset by disconnecting/reconnecting the battery. I had to do it 3, or 4, times before it reset, I moved the (in your case temp control) to different places each time I tried.

    You can dup the battery dis/re by pulling HVAC fuses, but I don't remember which one(s).

    If the reset does not work, you must change the actuator.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

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