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2004 envoy stalls whne ac is turned on - 2004 GMC Envoy

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Throttle body needs cleaning, build up of grime prevents butterfly from closing completely. Make sure to disconnect battery for at least 30 minutes while cleaning TB, this will allow PCM to relearn to cleaned TB.

Posted on Sep 13, 2010


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How to reset 2004 gmc envoy after changing the thermostat my car stall when I turn on ac

Probably an AC compressor problem - if it is even partially seized, when the AC clutch engages that will stall the truck.

Jun 20, 2017 | GMC Cars & Trucks

1 Answer

Stalling when ac turned on

You probably unhooked the battery recently if this just started. Classic dirty throttle body syndrome. Unhook the battery, yank the throttle body off (only 4 bolts) and clean with a product like a sensor safe Seafoam and a rag, do not use wire brush or something abrasive, will damage the aluminum. Can re-use the hard plastic O-ring many times over. Hook the battery back up and drive around for 15 minutes or so. This is THE most popular problem with Envoys and Trailblazers. After the original battery was unhooked, the computer thought the throttle body was clean, which it is not, so you will have idle problems when the A/C or Defrost is on. Before you unhook the battery for cleaning, make sure you turn OFF all HVAC including AC or Defrost, or you the vent actuators can go bad on you.

Apr 06, 2014 | 2004 GMC Envoy

2 Answers

2005 GMC envoy with a 4.2l stalls when ac is turned on

Throttle body needs to be cleaned front and back. Disconnect battery while doing the cleaning to force PCM relearn.

Apr 06, 2014 | 2004 GMC Envoy

1 Answer

Turning on the heater or ac causes 2004 gmc envoy

Bad Compressor bogs down engine and stalls

Oct 10, 2013 | Cars & Trucks

1 Answer

I have a 2004 gmc envoy and when you connect the battery back and turn on the ac or heater the car turns you have to reset will go away but after a while..

Assuming you mean that the engine shuts off or stalls, and also assuming you have the 6 cylinder engine. The mostly likely cause is a dirty throttle body. If you are a handy person you can do it yourself. Go to and do a search on throttle body cleaning for the instructions.

Jul 06, 2011 | 2004 GMC Envoy

1 Answer

My 2005 envoy stalls when you turn the ac can keep it running if you give it gas.

The throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean.

Sep 05, 2010 | 2004 GMC Envoy

2 Answers

2004 Envoy xuv 6 cyl when I turn on the A/C the truck stalls but as long as I keep my foot on the gas it will continue to run

Is your "Service engine soon" light on?? If so, have your vehicle's computer scanned for error codes. If not, Clean or replace the IAC valve (idle air control valve). This unit controls airflow through the engine while the gas pedal isnt pressed or A/C is powered on.

Aug 31, 2010 | 2004 GMC Envoy

3 Answers

2004 Envoy xuv 6 cyl stalls with A/C on at idle

2004 Envoy xuv 6 cyl when I turn on the A/C the truck stalls but as long as I keep my foot on the gas it will continue to run

Jun 11, 2010 | 2004 GMC Envoy

2 Answers

2004 Gmc Envoy when I put on the heater it wants to stall any ideas?

problem with ac compessor most likley when in defrost mode ac compressor will be working creating a major load on engine and cause it to stall

Jan 15, 2010 | 2004 GMC Envoy

1 Answer

A/C compressor is stalling

replace the ac system compressor dryer and orfice tube the ac compressor is locked up

Jul 06, 2009 | 2002 GMC Envoy

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