2004 GMC Envoy "car revs put park driving" Questions

...car in reverse, it revs up to 2 when I put the car in drive, so now I have to pause until it comes back down to 1 and before I can put the car in drive. It could be several things but most common ...

...claims it is from a tank of E85 he put in. Any ideas or suggestions? It has over 150k miles Thanks! That is normal. If you rev it in park it will not rev over 3500 rpm before it hits the rev

...revs up and down. when I start the car it stays at 2000rpm for a few moments then drops down. I'll drive for a few minutes then put it in park and it revs up and down. idle air control valve ...

revs up and down in park after starting. Sometimes after driving put into park and it will idle fine.. Sometimes it will rev up n down ..is this a vacume leak? Sounds like vacume leak or *idle stepper

...back into drive It will not drive only revs I put into reverse only revs. Anyone know whats wrong . Also car feels like it wants to die car idles really weak sounds like a rebuild is in line for ...

...car it have a low rev when i put it in drive the rev comes rely high and when i put it back in park the rev is still high Get a can of carbureator cleaner and spray around intake, see if idle evens ...

...put my foot on the gas, the engine revs up like it's in neutral, stutters, then drives...while driving, the engine stutters to switch gears, then revs up again, then drives...sometimes it reverse's ...

...car is put in park. always. Check the trunk release switch (either in the car or the fob) it sounds like it is allways operated but is inhibited when in drive or rev but becomes enabled when in park ...

...car. When i put it in park the engine revs even louder. Can you tell me what it could be? Thanks Good evening, I have a 1998 hyudai sonata and the engine races while I am driving the car. When i put ...

...put it in gear and start to accelerate its like you turned the key off (all gauges go to minimum, radio turns off, Ac turns off, etc). It also does this just by holding brake (while in drive) and ...