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Where is the heater core for GMC Yukon XL 1500 and how to removed for replacing

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Heater core is under the dash in the same enclosure as the interior fan motor. as to remove/replace, I recommend getting a chilton's manual for your vehicle, they have step by step instructions and specifications.

Posted on Nov 17, 2014

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SOURCE: 2002 GMC YUKON XL 1500 MOTOR DIES AFTER GOING

Check the fuel cap!! If the vacuum relief is not working it can impede the fuel flow and cause the engine to shut down or not restart after a stop. Waiting usually gives things a chance to stabalize and the engine will restsrt. When this happens again try loosening the cap and see if the engine will restart.....If it restarts immediately, REPLACE the fuel cap..Do Not leave it loose because this will cause other problems. If it is not the fuel cap the problem may be the filter, the fuel pump, or aome other fuel system malfunction.

Posted on Jan 24, 2010

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SOURCE: How do you remove the heater core on a 2002 gmc

Check this site out...http://www.tomanual.com/search/2002-gmc-yukon-heater-core-diagram

Posted on Sep 01, 2014

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I have a 2002 yokon xl with a 5.3l engnie have coolant comeing from the drive side at the back of the power streeing pumup


Sounds like your heater core might have ruptured. Will need to remove complete dash board to replace this component.

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Try to back wash the heater core first if it doesnt work then its clogged up try to turn the heater on the front with the heater off for the back keep an eye on the temp guage if it goes up than normal then its clogged....

Fyi u have to run the engine for awhile with the heater fan on

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Where is the heater core for GMC Yukon XL 1500 and how to removed for replacing


Heater core is under the dash in the same enclosure as the interior fan motor. as to remove/replace, I recommend getting a chilton's manual for your vehicle, they have step by step instructions and specifications.

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Heater core is under the dash in the same enclosure as the interior fan motor. as to remove/replace, I recommend getting a chilton's manual for your vehicle, they have step by step instructions and specifications. Its a great investment if you want to do things yourself, and if it's too complicated it should give you an idea as to what to expect from a mechanic

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Check this site out...http://www.tomanual.com/search/2002-gmc-yukon-heater-core-diagram

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Check your radiator fluid level, if it is low it is a good chance your heater core or the hose to the heater core has a leak. The heater core is a small version of a radiator which has the air from the blower blow across it to force warm air into the cabin of the vehicle. You will need to probe under the passenger's dash to locate the leak.

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the most common problem here is a defective air temperature control blend door actuator, this is what moves the door that controls air flow across the heater core or the ac evaporator core, to replace this requires u remove the dash assembly.

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heater core is bad needs to be replaced it is located behind clove box this is like a radator that is used to heat the air around it so that you recieve hot air when you need it

Dec 15, 2008 | 2001 GMC Yukon XL

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