Question about 2003 GMC Envoy

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2003 GMC Envoy stalling w/ AC on when stopping

My 2003 GMC Envoy is trying to die when I stop w/ the air conditioner on. Doesn't do this if the A/C is off.

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  • aturcott7 May 31, 2009

    If A/C is on when car is started runs fine and doesn't try to die at stops. If car is turned on without A/C on and A/C is then turned on later compressor kicks in and out and motor tries to die when you stop. Pressures in A/C system have been checked and are fine and low pressure switch has already been checked and is fine.

  • Anonymous Mar 27, 2014

    idles rough at stop

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2 Answers

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  • 179 Answers

Try turning up the idle ajustment screw also have alternator checked, another solution would be to have your car tuned up weak spark from your coil worn plugs wires etc. not enough power is being produced

Posted on May 31, 2009

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There is no idle screw its drive by wire u have to clean the throttle body and that will fix your issue

Posted on Sep 26, 2012

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1 Answer

When air conditioner comes on the engine wants to stall


Sounds like the idle air control valve is not working or the air journal supplying air to the IAC is stopped up with sludge. I usually try tapping on the IAC with a small tap hammer first. If that doesn't help you may need to give the intake manifold a thorough cleaning

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How do I adjust the idle on 2003 GMC Envoy SLT


ok so for idle on new cars you cant adjust it but for the idle problem take out your idle air control valve and clean it with carb spray or replace it for sixty dollars and if you need more help lemme know

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2003 envoy changed battery out and now when i put on ac truck stalls and dies


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. Make sure to clean the front and back sides of the throttle body. Also, disconnect the battery during the cleaning process to allow the computer to reset and relearn to the cleaned throttle body.
When you changed the battery, the computer was reset back to factory settings and with a dirty throttle, the fuel/air mixture is incorrect.

Aug 10, 2011 | 2003 GMC Envoy

1 Answer

When i drive my 03 envoy and turn ac on it cuts off


If you mean the engine stalls when you come to a stop, then the throttle body is in need of cleaning.

Jul 30, 2011 | 2003 GMC Envoy

1 Answer

2002 envoy battery died - replaced and now wont start on Driver 2 and wants to stall at all stops on Driver 1 - also stalls when the air conditioner is used


Very common problem with Envoys and Trailblazers. For Driver 1 Clean your throttle body with throttle body cleaner while the battery is disconnected. After this is done, re-connect your battery, drive around for 5-10 miles while the computer resets and relearns. Do the driving with the A/C off and the defroster off. Your problem will be solved. I've never heard of not starting in a different driver mode with just changing the battery.

Dec 10, 2010 | 2002 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

1 Answer

GMC Envoy A/C Problem


I'd remove my idle air control (IAC) motor, and clean it & re-install to see if that helps. Use throttle body cleaner on pointed part of motor (pintle) and shaft , as well as spray into hole (port) it came out of . If it helps for a while, then start to do it again, I'd replace the idle Air control motor.

May 31, 2009 | 2003 GMC Envoy

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