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GMC Jimmy Questions

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600
questions

Still won't start

Wen warming up the truck, every time, morning, afternoon and night, the idle goes up and down for about 5 minute or till warm up. It doesn't have trouble starting and runs great after warm up. No codes or check engine light on.
Please help. Any advise or info would b greatly appreciated. Thank u.

I HAVE A 2001 GMC JIMMY IT IS BURNING REALLY RICH AND ONLY GETS AROUND 6 TO 8 MILES TO A GALLON. AND IT RUNS AND IDLES ROUGH UNTIL YOU HIT ABOUT 3000 RPMS. I BROUGHT IT TO MY DADS LAST WEEKEND AND WE LOOKED AT IT, WE NOTICED THE FUEL PUMP WILL TURN ON AND THEN TURN OFF LIKE NORMALLY WHEN YOU TURN THE KEY TO START POSITION, BUT AS SOON AS YOU START IT, IT CONTINUALLY RUNS. ANY ADVICE WOULD BE MUCH APPRECIATED...IM THINKING POSSIBLY FUEL PUMP RELAY?

My car was knocking so i found a rocker arm loose on cylinder 6. The nut was tight to spec 18ft.lb, i tried tightening to 20ft.lb and did not change anything. I put a washer between rocker ball and rocker nut and tighten to 18ft.lb and it worked, i could still move rocker arm from side to side slightly. Now it runs really rough and gives me code P0306. What should i check for. Thank You for ur time.

the tail gate window open,the tail gate door won't open went i push botton on the door.please help.

Weather related? Began after an intense, Ohio Spring downfall. It hasn't rained in a few days and it is still running rough.

transfer case has been replaced since then,all u joints good too

I was driving down the highway and was about to get off an exit when the steering wheel got hard to turn, the ABS light went off and the low fuel light went off as well. i just filled up my car an hour before this. I put it in park and it turns off. I tried starting it up. It'll try but won't turn over. Tried putting in more oil since that was low and that didn't work. Any ideas?

There are two line's is one a return and only leaks while running

I bought this with no rear brakes,after checking things out I replaced the master cylinder,(I bench bleed the new one)now I have no pressure in either the front or rear lines.Can't bleed the system,any suggesstions what could be wrong?

i have the dash out i cant find all the bolts to take the heater core black box out off of the firewall so i can change the heater core

i recently changed the fuel filter in my 1997 gmc jimmy and now the fuel leaks out of the quick connect fitting immensely.is there
supposed to be o-rings inside the fitting?what would cause this to happen

i just replaced my fuel pump 10 months ago.

Could it be stuck in 4 wheel

Had to cut the tabs on firewall. Now, after installing new heater core, I cannot get the bolts to line back up and thread in correctly. Does anyone have any suggestions on how to re-align to install box back in front of new heater core?

I do not know what controls the vacuum for the actuator to pull the cable. Has a new actuator so that is not the problem. The transfer case engages the front driveshaft so all that is left is that front deferential not getting locked in. I cant find any vacuum leaks either.

I just got this '99 Jimmy and am not familiar with it. However, the 4WD buttons push in and light up ok. It's just the it doesn't go into 4WD.

The light comes on when flipping the switch but the window does not heat up. Not sure where to start looking for the issue. Does this work through a fuse?

I've replaced cap and sprayed lab on cap+wires+plugs and problem still there. Truck is in shop now and there telling me it's my timing chain and gas is going into the oil. They said to fix problem it will cost $1900...ughh does the sound right?