Question about 2002 GMC Envoy

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The air conditioning in my 2002 GMC Envoy only works for a short time. It continues to blow, but it stops cooling. What could be the problem?

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  • 128 Answers

You need freeon take it to be serviced its around 80 dollars

Posted on Aug 21, 2010

  • heather_clay Aug 21, 2010

    We tried to charge the freon, and it says that it is not needed.

  • heather_clay Aug 21, 2010

    is there 2 valves to install freon, if so, where is the 2nd one?

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Why is my 2003 gmc envoy air conditioner blowing cold air intermittently? ive read something about the ambient air temperature sensor but would really like to be a little more sure if at all possible


I would be more inclined to check the compressor for proper operation. If it is losing pressure it will give you the condition you are experiencing. Does the ac seem to work better going at speed down the interstate? If yes, your probably looking at a compressor replacement.

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Most probable cause from your description on problem is leaking charging valves. Have them replaced. Oil needs to be added as well then recharge.

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My 2002 Envoy engine shuts down in low, i notice a huge leak of dex cool in drive way, also when i turn of the air condition the rpm goes down and sound like ready to shut down. The rear its un level righ...


I don't see any need to go into a long story here

You have at least two problems that may not be
all that big a deal

I would flat bed it to a dealer or local repair shop

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Horn on 2002 Gmc Sierra 1500 stopped working. Horn stated boleing fuses a couple of years ago and was just changing fuses to fix problem short term. Last time horn stopped working I changed fuse and it did...


Sounds like the horn itself is shorted out. You didn't mention if the blown fuses were a result of using the horn. A horn in construction is an electromagnet acting on a diaphram; if the electromagnet develops a short, it causes an overcurrent condition and will blow the fuse.

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Why is cold air blowing when it's on heat on passanger side?


Most likely, the **** in the cooling system has over time worked its way to the heater core and gunked it up, requiring the core to be pulled and cleaned/replaced.

Dec 21, 2010 | 2002 GMC Envoy

1 Answer

2002 GMC Envoy..Air works fine out of passenger side but blows hot air out of Driver side


blend door actuator needs to be replaced. dual climate controls have one for each side.

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Climate control air conditioner stops working due to incorrect ambient air temperature


Same car, same problem. Press MODE, FRONT and REAR buttons together to reset tempreture. You probably need to replace the sensor GM part number 15047946 it is in the front grill email me for a picture. chris.abbott@gmx.com

May 21, 2009 | 2002 GMC Envoy

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