Questions & Answers for: 2004 gmc heat idle

2004 GMC Sierra Heater does not heat on low RPM The heater will blow only unheated air at idle or until I actually apply at least 1600rpm on the engine. It will heat just fine then. On the road it ...

idle. Do the same starting from the brake booster unit (the round unit) on the drive side fire all. Carefully listen for increase of RPM right after to spray the Berryman to the potential vacuum spot.

my 2004 yukon denali only heats up once i start driving, and starts to blow cold air when i stop or it idles. thinking it may need a new thermostat Yes, it sounds like your thermostat is stuck in the ...

2004 gmc envoy xuv is idleing i put the heat on n it stalls out.why? Either you have a vacuum leak or electrical issue. First Inspect all vacuum lines. Next test engine vacuum (17-21 hg's) If all a-ok

when my 2004 gmc envoy xuv is idleing i put the When my 2004 gmc envoy xuv is idleing i put the heat on n it stalls out.why? More than likely the throttle body needs cleaning

I just got my battery replaced in my Envoy and ever since it idles low and when I turn my AC/Heat on it shuts the truck off. I heard that I need to get it programmed or maybe after a few weeks it ...

...my heat or air is off it runs fine but everytime i turn the a/c or heat on it dies. What could it be... i would try replacing both the idle air control valve(IAC) and the (TPS) throttle position ...

hi i am having a problem overheating i have taken it to haldimand motors where purchased twice for the problem they replaced thermastat and heat sensor still problem exsists i replaced rad cap now ...

...2004 5.3 2 wheel drive Sierra and have taken it to 2 qualified mechanics to diagnose. However, their respective diagnostic computers cannot pinpoint The oil is clean and undiluted, the air filter is ...

...Heat...dirty air filter, replace and clean out throttle body...Idle Air Control valve...spray, wipe out with rag...also spray the MAF sensor with special spray ONLY...injector spray erodes the sensor ...