Chevrolet Avalanche 1500 Problem Report

Chevrolet Avalanche 1500 Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator

(34 reports)

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

when air is on,suddenly it switches to full heat.If i stop and turn the engine off then restart the air works again. -
After battery removal air will only blow through defrost vents. -
Intermittantly, hot air comes thru driver's side when all selectors are off. This can happen when A/C is on also, but passenger side is cold. No codes come up on computer when checked. Replaced driver's side actuator door once with an after-market product. It's still doing it. Temp fixes include turning off engine and restarting; turn knob to defrost to redirect air; and recently found that pressing the recirc button helps too while driving. Does the driver's actuator door need to be replaced again? Does it need to be a GM part? -
climate dual control both sides down to cold ac switch is on .blows cold air to passenger hot air on driver. not fixed yet . looking for repair shop -
Dual zone air delivery - one side blows a/c cooled air and the other blows heated air in spite of temp control settings -
Climate control lights for the passenger no long illuminate, when setting is on cold, cold air will blow on drivers side vents, but heat (that is hotter then the blazes of hell) blows from the passenger vents. -
With air conditioning on, sometimes blows hot on passenger side, cold on driver. Sometimes opposite. Turn off engine, restart sometimes let's air conditioning work again -
Heat is not blowing. Have put in new blower motor, blower resistor and changed the 40 amp fuse which was blown -
Driver's side emits cool air when heat is selected. Passenger side blows hot air. -
The problem that I have at times is the air condition is hot on the drivers side vents, but cold on the passenger side vents -
air conditioner blows hot a air on drivers side and cold on passenger side. After a restart it worked properly. A day later I am back to square one. Hot on Dr. Side and cold on passenger. It's dual climate control....Any help is appreciated. -
The air blending door " stepped motor" failure -
at times I cannot control heat output. I change temp settings to no avail. puts out hot air no matter what -
Air will only blow through the defrost vents -
A/C blows hot through the drivers side and cold through the passengers side when the A/C is supposed to be blowing cold. I have found that pulling over and turning of the engine and re-starting will reset the issue. But I have this issue numerous time a month... This should be something Chevrolet should recall but they do not care about the customer. I have priced the actuators but really won't know which one, until I remove the driver side one and find out the part number. Make me want to drive a FORD!!! -
Cold air turns in to hot heat from vents while driving. Can stop and shut engine off and restart and cold air blows again -
same as above. -
Problem came from a dead, dead battery and trying to jump start the vehicle. Got it started and replaced the battery to find my air was blowing cold out of the defrost and floor vents and the dash vents would not function. The problem may have been the dead battery and trying to run the AC blower and vents while starting. Perhaps it couldn't get enough amps to run right and burnt out the little motor or derailed the gears. I had the same problem at the same time with a drivers side rear passenger window regulator assembly. My passenger tried to open the window on the dead battery and the motor made some noise and the cables came off the tracks causing the window to fall. HINT. Make sure everything is shut off before you try to start your vehicle if the battery is low or you may lose similar functions. Replacement is the only solution. -
on off switch for a/c does not activate compressor. -
I removed my radio and now my heat & air is messed up. It blows hot on driver side & cold on passenger side. -
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