GMC Jimmy Questions

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It runs at a high idle at all time never goes below a grand and a half I need to adjust it to where it is at or below a grand

My air conditioner doesn't blow cold. I need to add freon! WHERE does it go?

I have a 97 GMC Jimmy it will start and run fine and park or neutral but when I go to put it in gear reverse or drive it wants to die like it's not getting fuel it starts backfiring and cutting out I have replaced distributor cap and rotor new spark plugs new wires new fuel filter the only thing I have not replaced on it is the fuel pump could this just be a vacuum issue or something else these problems started a couple weeks ago any help I can get on this issue would be great thanks for your time and be safe y'all

Doesnt matter if the engine is cold or 200 degrees my idle in park is roughly 700rpm and feathering the gas peddle when putting it into gear seems to have no effect. Already replaced the idle air control valve even tried changing the TPS though I think the new one is bad as it idles at 1500rpm and the engine still stalls when putting into drive/reverse. Thus far no check engine light.

Truck seems to be running fine except for when I try to reverse

Who ever did the tune up last ended up cross threading the spark plug cylinder. Trying to find a tap big enough but need to know the pitch

Tail lights don't come on when headlamps on, I've checked fuses, changed all bulbs, checked relay switch. All lights work headlights, blinkers, hazards, turn signals and reverse but tail lights won't light up when headlights on. been told it's the ground wire not sure where or how to fix my self or what it might cost at a shop.

on the fuel tank gauge not reading right.

All 4 electronic door locks quit working one day after I got a jump start though the rear hatch still works and the fuse is good (neither the actual switches nor the remote will lock/unlock any of the doors. almost seems as if their not getting power (though when i remove/re-insert the fuse the doors automatically lock)

Starts up fine and when I get up to 40 miles an hour then the jimmy dies out. Then I have to wait for about 10 to 15 min to start the jimmy back up. Then it is slow starting to go down the road with out it stalling out again. The longer I let it sit the better it will run after it has died out. do you know what the problem is with this.

The loud noise is coming from rear 4x4 push button lights arent light on 2hi 4lo or 4hi and when i put it in gear still holding in brake my mph goes up not high but like 5 or 6. Not sure of the issue just happened wasnt like that when i got out got back in and wouldnt start got a jump and all of this

Replaced the master cylinder thinkin that was it and the brake light went off but the abs wont...abs control module maybe?

4.3 engine

One day the truck starts fine next it doesn't. Battery and alternator have been checked it the security system.

my 1995 Kimmy starts at times it will idle bat give gas it stalls

When I step on the gas the air flow out of the ac vents are reduced to almost nothing and it comes out defroster vents top of dash

Anytime I drive, it does not seem to hold gas in the tank. It always seems I have to keep going to the gas station. I'm not sure if my fuel pump is causing the problem

When I turn the wheel to the left, I hear a knocking sound that seems to come from the front wheel.

I do not think its the brake pads. it does not sound like a grinding noise

Service engine soon light constant. Just tuned up, oil change, fuel pump replaced.
85000 miles. SLE 4wd

Everytime I push on the brakes my car revs up a little bit and then it almost killed it what is my problem?

My speedometer isnt workin either

I also hear a thumping noise when driving like a broken belt in one of the tires, but was told that it might be the wheel bearings.

gas flow ? will not start?

Vehicle will not start nor will it come out of park but it's like it is in neutral you can roll the vehicle back and forth

This works sometimes but at other times, I hit the biggest bump I can and it doesn't start blowing. The air is cold enough when it does blow. Doesn't always blow hard when it blows but much better than not working, at least in the front seat

My 1992 GMC JIMMY Vin letter Z will start fine and run beautifully fist thing in the morning but after driving it a little bit and outside temperature raises the vehicle starts to chug and then shuts off like it's out of gas. I noticed that during it doing this there is no fuel coming from injectors and if I let it sit a few hours it then will spray fuel out the injectors and start for a small period of time. I replaced the fuel filter, the fuel pump and fuel pump relay with no luck. I dont know what else it could be please help.

My trans is fairly new rebuild .It is slipping and the speedometer bounces up and down and some times dont work .I can manual shift in 1st and 2nd but no 3rd or overxrive .I was told it may be a vss .Vehicle speed sensor .If u can please give me ur opinion which will greatly appreaciated.Thanks Ken

and it still is misfiring what do i look for next

I change the spark plugs, the wires and ignition coil but still having problems I remove one hose from the intake and stop the problem once I plug in back the problems start