Chevrolet Avalanche 1500 Problem Report
Chevrolet Avalanche 1500 Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator
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. - Visitor
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 - Visitor
Dual zone air delivery - one side blows a/c cooled air and the other blows heated air in spite of temp control settings - Visitor
After battery removal air will only blow through defrost vents. - Visitor
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? - Visitor
Heat is not blowing. Have put in new blower motor, blower resistor and changed the 40 amp fuse which was blown - Visitor
Driver's side emits cool air when heat is selected. Passenger side blows hot air. - Visitor
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. - Visitor
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 - Visitor
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 - Visitor
at times I cannot control heat output. I change temp settings to no avail. puts out hot air no matter what - Visitor
Air will only blow through the defrost vents - buffaloking
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!!! - Mallard245
Cold air turns in to hot heat from vents while driving. Can stop and shut engine off and restart and cold air blows again - Visitor
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. - Visitor
on off switch for a/c does not activate compressor. - Visitor
I removed my radio and now my heat & air is messed up. It blows hot on driver side & cold on passenger side. - Visitor
Same. Have to turn off the engine and restart to correct. - Visitor
malfunction in left air temperature actuator, remove and replace. In 2008. Same problem in 2010 mileage 93929. And again in August 2011 mileage 114056. - Visitor
CHECK AIR BAG LIGHT CAME ON ABOUT A MONTH AGO AND HAS NOT GONE OFF
I can only get cool air whin I turn my heat all the way to hot, and turn the blower on. I know...
Please advise cost of installing owner provided Mode Actuator in dash unit of above Avalanche....
My a/c system switches to full heat while driving. It occurs on the drivers side only. Shutting...
The fuel pump may fail causing the engine to stall and not restart.