2004 GMC Envoy Q&A
2004 GMC Envoy Question: engine stalls with A/C on
Sounds like the idle speed is too low when the a/c compressor is on. The system should raise the idle speed a bit to compensate for the additional load of the compressor, but it doesn't appear to be. There can be many reasons for this and without running some tests and checking it out I would only by guessing. Best to have a shop that can properly diagnose this look at it. http://repairpal.com/directory?address=35214&car_brand_names=GMC Good Luck - Bret Bodas
motor stalls when deforster is slected - Visitor
it sounds like your throttle body is dirty and or built up with carbon i would try to clean that using a carb cleaner - Visitor
I have a 2004 Gmc Envoy when I turn on the heater the compressor clutch stops then starts again, also at the same time the idle on the truck changes and tries to stall. It does heat also when I use...