Question about 2002 GMC Envoy

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2002 envoy ac and heat not working but fan still works, what can be the cause

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If your waste gate doors aren't opening you wont feel anything, could be bad a/c - heater control assy.

Posted on May 18, 2011

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1 Answer

My rear AC and heat blower stays running after I


Rear fan relay is stuck. Replace the relay.

Aug 28, 2014 | 2002 GMC Envoy

2 Answers

2002 gmc envoy is over heating have changed the thermostate and the put new radiator but its still over heating any suggestions


Have the FAN CLUTCH checked. they are a common failure. Get a AC DELCO or the part from the dealer. Why was the radiator replaced? Heater work OK? A/C works OK?

Sep 22, 2011 | 2002 GMC Envoy

1 Answer

The fan that blows both AC and heat has quit working on my 2002 Envoy. At first, it took several minutes to begin blowing after being turned on, now nothing. Any ideas?


check the heater eliment under the passenger side of the truck ,remove the black cover and wiggle the plug they tend to loose connection

Nov 09, 2009 | 2002 GMC Envoy

1 Answer

Gmc sierra blower switch


last place to look is the resistor block located in the duct work for the blower (fan). it should have a wiring plug going to it and be held in by a couple screws. look on the passenger side near the fan itself.

Sep 03, 2009 | 2002 GMC Envoy

1 Answer

2002 GMC Envoy-air conditioner/heat


If only some of the fan speeds work this is always the blower motor resistor located in the hvac case inside the right front of the vehicle where your passenger feet would be.the blower motor resistor is available at most larger parts places.I replace 2 or 3 of these a week. Good luck

Aug 22, 2009 | 2002 GMC Envoy

2 Answers

Replaced battery on 2002 gmc envoy. now it goes dead when air is


your alternator may be the problem here. When the AC is on, the motor has to work harder, and the fans need eletricity to spin (unless they are powered by a belt, unsure). If the alternator can't keep up the battery will die.

Aug 15, 2009 | 2002 GMC Envoy

1 Answer

2002 Envoy AC only works on auto and for a short time


replace control head if the ac works on auto

Jul 03, 2009 | 2002 GMC Envoy

1 Answer

Fan for ac/heat does not work in front


It's the blowe motor resistor real common

Nov 03, 2008 | 2006 GMC Envoy Xl

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