Question about 1999 GMC Jimmy

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Do you bleed the line after you change thermostat on 99 jimmy

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You do not have to bleed it. You will need to let it get up to temperature though and cut it off. Make sure the radiator and resevoir are both full before you start this proceeder. After it cools good top them back up and then test drive.

Posted on Nov 05, 2010

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What would cause the Brake Calipers to stick and get my Rotors hot on my 1999 GMC JIMMY


The master cylinder. What you have is something that is pressurizing the front brake circuit but not the rear. The only possibilities would be the Master Cylinder or a proportioning valve.

May 07, 2016 | 1999 GMC Jimmy

1 Answer

What process u have to use to reset drive cycle for 99 gmc jimmy evoy


General Motors Driving Cycle just make sure you have no codes and your chk eng light is not on,drove me nuts for weeks nothing would set so i got my own scanner and seen that the coolant was only reaching 140F so i changed the thermostat and the next ride everything set so look for the little things that might be wrong. http://www.obdii.com/drivecycle.html

Feb 28, 2015 | 1999 GMC Jimmy

1 Answer

My 99 jimmy will crank but wont start, after a day or two sitting the battery drains. The alternator and battery are only a year old.


it sounds like a fuel problem, cheapest option is to replace fuel filter first if that doesnt work do a bleed test on the fuel line to make sure the fuel pump is working.

Aug 30, 2010 | 1999 GMC Jimmy

1 Answer

I have a 1998 GMC jimmy heating problem. it blows out cold air we fixed the thermostat and the dile. what could be the prob


If everything else is working properly, then there might be air in the system. Bleed the air out via the heater hose at operating temp.

Dec 01, 2009 | 1998 GMC Jimmy

1 Answer

My jimmy just came back from the shop with the brake lines replaced because the brakes were loose from before the car seemed to be braking fine until a few hours after when i would have to push further...


Hi,
Sounds like they didn't bleed all the air out of the lines. I'll assume that if you pump the brake it will be a hard pedal. I'd take it back to them and have them bleed the brakes again. Brakes are vital to your and other's safety. Make 'em get it right...
Hope this helps... Good luck.

Oct 13, 2009 | 1999 GMC Jimmy

2 Answers

Brake pedal still goes to floor 2000 GMC Jimmy


It's very possible to be the master cylinder, the o-rings on the piston could be worn, letting the fluid seep back through instead of getting full pressure through the lines. Could also be the brake booster.
Try changing the master cylinder first, which is cheaper and easier, and see if there is a difference, you'll need to bleed the brakes again.
To check the booster,
With the engine off, pump the brakes until the pedal is hard, then hold pressure on the brake pedal and listen for air escaping, or the pedal goes slowly to the floor, Do that after the master cylinder has been changed, at least that will be eliminated.

Sep 15, 2009 | 2000 GMC Jimmy

1 Answer

How do i properly bleed out my Jimmy?


I use a vacuum bleeder (abt $35) starting at the furthest brake line from the master cylinder & working my way back to the closest. If bled properly by keeping the maste cylinder full, this should solve your problem. Rick

Apr 15, 2009 | 1998 GMC Jimmy

2 Answers

Heater goes from hot to cold


I WAS TOLD IN THE PAST TO GET RID OF THE ORANGE ANTIFREEZE AND PUT IN THE GREEN IN ALL MY VEHICLES CREATES MORE PROBLEMS THE IT CURES THIS IS BY A SHOP I TRUST.I HAVE A 95/98 AND 99 BLAZERS.I HAD PROBLEM WITH VERY LITTLE HEAT AFTER CHANGING THERMOSTAT. HAD TO GET AIR OUT OF LINES BUY RUNNING IT FROM COLD START WITH RADIATOR CAP OFF UNTIL THERMOSTAT OPENED AND LEFT IT RUNNING UNTIL I SAW NO AIR BUBBLES COMING OUT OF RADIATOR SEEMED TO CURE PROBLEM

Dec 13, 2008 | 1999 GMC Jimmy

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