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How do i change a heater core for a 2000 gmc jimmy

I dont no how to change the heater core in a 2000 gmc jimmy

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Tech Jenkins
  • 359 Answers

SOURCE: 1998 Jimmy-heater core

If you don't know it's best to take to a shop. It involves dissembling the majority of the dash.

Posted on Oct 17, 2008

WarHog
  • 9 Answers

SOURCE: 94 GMC Jimmy heater fan not working

if you hear the fans blowing and no heat is coming
then you mite have to replace the heater.

before you try to replace the heater talk to Lords

Posted on Dec 04, 2008

SOURCE: 2001 gmc jimmy engine warm but heater blows cold air

Disconnect the heater hoses from the water pump and the intake manifold. Get a compressor and blow out the hose (put the air hose into the the hose that came off the mainfold. then flush the system and replace the antifreeze.

Posted on Dec 12, 2008

dnewcombe1
  • 1564 Answers

SOURCE: Replacing heater core in 2000 GMC sonoma. Dash is

If the dash is removed you've saved about 9 10ths of the job endurance. Look around, what you believe to be, the perimeter of the heater box. I cannot, and no one else can, tell you exactly where the bolts and nuts that mount the heater box are. Therefore you must viually sixe the box and check outide in the engine compartment and inside under the dash for the mounting bolts.You'll want to start by removing the heater hoses. Then starting at the passenger side engine compartment look for a group of 10mm or 7/16ths nuts retaining the housing and remove them. Do the same inside. The housing is usually held together with screws or clips, it changes year to year. Keep a log or pix of the wires and cables and hoses(vacuum) that are connected to the housing for reassembly. You'll need to "roll" the box out from under the dash depending on how much of the dash has been removed. The core is easy to spot for is has two hoses sticking out, and, is encircled with clips or screws . Also make sure you remove the bracket around the two entry hoses if it has one. Thank you, Dana

Posted on Oct 04, 2009

emissionwiz
  • 75744 Answers

SOURCE: how do you remove a heater core from a 1999 gmc

The instrument panel carrier is designed not only to provide access to parts through removal of the carrier components, but the carrier will also tilt downward as a complete assembly to allow access from the top. If this is desired, remove the retainer screws along the top and bottom of the carrier assembly (refer to the figure). The instrument panel will then tilt as an assembly into the cab. It is necessary to unbolt and lower the steering column from the carrier to allow for maximum movement of the instrument panel. OK you'll find and remove two screws in each of the defrost vents, that done now start on the passenger side by removing the side kick pad, 4 screws, now remove all the screws along the bottom of the dash, there should be 8- 1/4 head screws and three black plastic peaces will come out once you've got them all out, a long one on the passenger side, one under the steering wheel, and one small one by the fuse box, now there is one more panel to take off right under the calum you need to do this to get to your calum nuts, Oh the park brake cable needs to come off there's spring on the cable by the little lead ball on the end you need to compress it to get it over the fork in there, you'll see. OK now you have to locate four 3/8 head screws along the bottom one in each corner of the dash, one in the middle, and fourth one is up by the sheering calum nuts the nut close to the passenger side, now if yours has a tray in front of the center Counsel it is a good time to remove it three Philips screws and unplug the wires, I took this out because I need to wash all the anti freeze out of small duct pieces and the foam inside OK now turn the key on and shift the shifter to low to get the handle out of your way for later, ( UPDATE remove the plastic shifter indicator cable, you'll find it clipped on the part of the calum that moves as you shift, it will just push off, it should be on the right side under the calum nut if you don't the indicator won't work right ) remove the two steering calum nuts and pull the the calum down, time to move to the passenger side again, I did take the radio out but I found I didn't need to it will cut down on the weight though. OK now start to lift and pull and just keep working it out If you need a picture of where the heater core is and what it looks like send me a e mail at windwalker.xc@gmail.comand I'll send you a picture I took of mine, anyways keep working it out till it's about a foot and a half out, now if it's not coming out check to see if a wire is holding you back I had a white one from the firewall and the wires for the computer needed to be worked and loosened a bit. OK now it's time to go after the heater core, the heater core cover has six screws holding it on, three up top and three on the bottom none are hid like some say in the forums, now move that cover to your right to brake it free, the foam on the left side is what is holding you back just rip it on the top and bottom fix it later, with that cover out of the way you should see the core now, on the sides you'll see a steel strap each strap has two screws holding it in place, remove them. OK now go out and under the hood, I found just cutting the hoses off at the core pipes worked for me if yours come off easy do that mine were not coming off, you will see a bracket in between the to pipes it is held there with a small screw, remove this screw then the bracket, because it won't pull through the fire wall, trust me, jam some rags in the heater core tubes so anti freeze doesn't spill out as you pull it through the fire wall, time to go back into the cab now. OK now just remove the old core and put the new one in, go out under the hood put your bracket back on, put in the screw then the hoses, go back to the cab and replace the heater core cover, put in your six screws, Now with the cover back start working the dash back into place, remember any wires you unplugged need to be replugged Eh. once the dash is in place I put the top screws in first, the ones up top at the defrost ducts, not all the way in mind you, because you'll need to move your dash around a bit to make sure all the screws on the the bottom line first

Posted on Oct 23, 2009

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1 Answer

How do you remove a heater core from a 2000 GMC JImmy


2000 GMC Jimmy heater core replacement in order to replace a heater core in a 2000 gmc jimmy the coolant must be completely drained and the entire dash including radio, vents and panel covers must be removed. four screws hold the top portion(closest to the windshield) in place. they can be found under the windshield defrost vent. after the entire dash is removed a safety harness under the steering column must be removed and the steering column must be dropped to the driver seat. the heater core housing(black plastic) is located right center of the dash and is a two part housing one piece on top of the other. the housing is attached to the fire wall and must detached before replacement can continue. after detaching the housing from the fire wall separate the housing by unscrewing the six screws that hold it together. the heater core is now exposed. disconnect the heater core from the two hoses and discard. installation is the uninstall process in reverse. it is a very long and drawn out process that is not accomplished in just an hour or two . make sure you have most of the day or several afternoons to finish . Good luck and take pictures with your cell phone to use as reference.

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I had problems with a similar truck,a 1998 GMC diesel after checking to make sure the control cables were operating the blend door and blowing the mess of the heater core,I replace the thermostats.Still no heat turns out there was a small amount of debris collecting in the fitting for the inlet hose at the thermostat housing after removing it and blowing out the lines the heat was fine.

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