Question about 2002 Jeep Grand Cherokee

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Heater core 2002 jeep grand cher.

I have a 2002 jeep grand cherokee and my heater is blowing cold air i was told it was the heater core but not sure how to change it .. do i really have to take the whole dash out > ? any solution would be helpful . i looked on autozone.com there manual shows to take whole dash out but i feel u wouldnt have to go through that ..

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  • melissa1608 Jan 31, 2009

    Same problem with my 2002 Jeep Grand Cherokee.I took it to a shop & they said the heater box was broken(they removed it & it definately was).To replace after 3 estmates the whole dash has to be removed & this is very expensive. The heat on driver side does work,but passenger side just blows cold air.Any info would be appreciated.Thanks!

  • kd5lzj Feb 01, 2009

    ATTENTION EVERYONE WITH HEATER PROBLEMS!!!!!!!!!!!!!!!!!!!!!!

    I have done everything, thermostat, checked blend doors, cooling system flush. The heater core is not bad and new thermostat installed. If you are having heater problems PLEASE TRY THIS BEFORE you do anything else!!!!!!!
    Turn the ignition on and then turn on the heater/ac system. With the heater/ac systen still on turn the ignition off. Next open the fuse box located next to the battery and pull fuse # 15, it is 50 amp fuse. Wait approximately 5 minutes and then reinstall the fuse.
    Turn the ignition on and wait 2 minutes. Now start the engine and let it warm up. This may fix your problem. This is some type of computer reset and it could save you hundreds of dollars. It worked for me. Thanks to Chris A.

  • dashboard47 Feb 15, 2009

    My heater blows cold air too. But if you continually flip the settings and temp back and forth, sometimes it will blow heat. Last night, I was flipping the settings and it started blowing heat on the AC setting. It's like you have to guess which setting feels like blowing heat everyday. It's a real pain.

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I purchased a Blen Door repair kit. for my 2002 Jeep Grand Cherokee after having only cold air blow out of the passenger side for over a year. I found it on EBay. It requires you remove the glove box, cut open the heater box and replace the blend door. I really didn't want to cut that open, however, with the tape that comes with it, I have had no problems with it leaking any air. The dual control no longer works, the temperature is now completely controlled by the drivers side, but to save $1200, I was willing to do this. I have taken the entire thing out before to replace the heater core, didn't want to do it again.

Posted on Feb 15, 2009

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