Question about 2004 GMC Envoy
It revs up and down and stalls but it with stop having problems when you turn the heater off
Sounds like you're running the whole vehicle off the battery. Have your alternator tested
Posted on Feb 15, 2012
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Posted on Jan 02, 2017
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
Clean your Throttle body and pay attention to the Idle Air Control (IAC) valve passageway to try to clean the IAC. A dirty or faulty IAC will cause your engine to stall at idle, the job of the IAC is to open the passage way through the throttle body to regulate the amount of air to enter the engine to keep it from stalling when the Envoy is at idle.
Start with the simple and clean the throttle body and inspect any loose or damaged wire leads to the throttle body. Replace or repair any signs of damage.
Thank you for using Fixya and good luck.
Posted on Apr 13, 2010
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