Question about 1999 Jeep Grand Cherokee

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How do i replace a heater core on a 99 jeep grand cherokee? I looked at the information given in AllData. Do I really have to dismantle the dash?

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  • Richard Scordino May 11, 2010

    Yes you do. Great design !!!


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  • 295 Answers

Yeah the dash must come out in order to gain access.

Posted on Nov 16, 2009

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2 Answers

How do I fix my heater in my 99 jeep grand Cherokee

There are two systems to evaluate.
  1. Air Blows Fine but not Hot -> Check Thermostat and coolant level.
  2. No Air Blows -> Check Blower Motor, Blower Motor Resistor Pack and Blower Control in Dash

Nov 14, 2014 | 1999 Jeep Grand Cherokee

1 Answer

Replace heater core

huge job. like asking how to remove engine.
1: remove dash (50 steps.
2: remove heater box.

this 8hr job (we call it the lost weekend) is 100% covered in the
real FSM. got one.
or go to pay yahs 15 clams and see HVAC,tab.
click heater R&R , bingo.

4 in and out. shop rate, look it up.

Dec 25, 2013 | 2000 Jeep Grand Cherokee

1 Answer

My 99 Jeep Grand Cherokee's heater core is leaking

Here's a link on how to replace your heater core.There are two engines listed for this year,here is the link to the 4.0 engine,Here's a link to the 4.7 engine.

Dec 13, 2012 | Cars & Trucks

2 Answers

Does a replacement of the heater core diagram exist? how do i replace the heater core. I have a mechanical background.

Most Jeeps require removal of the dash board to accomlish a heater core replacement. It isn,t really hard to do, but is a hundred times more difficult if you don't have access to A/C evac/recharge equipment. The service manuals give step-by-step instructions, usually with pictures, on how to do this. If you want GOOD, RELIABLE information on your particuler model, you can purchase a one year, single vehicle subscription of AllData for $26.95. Click the link below to go to AllData.

It's not free, but it is the same information used by professional shops and costs a lot less than paying shop labor. (The usual labor time for replacing heater cores in most Jeeps is 6 to 7 hours.)

Dec 04, 2010 | Jeep Grand Cherokee Cars & Trucks

1 Answer

How do i replace a heatercore on my 99 jeep grand cherokee

You have to remove the console, put the steering column down, remove the complete dash to access the hvac assembly where reside heater core, blower fan, blend door(s) and recirculate door.

Around 15 hours of labour time by experimented person, plus the cost of defective parts.

If you're planning or thinking to do it yourself, I will suggest that you take a look on the following youtube accelarated video which give you an idea.

As you can see, it's an heavy process. So be sure you heater core is really the root cause of your problem (leaking? odor? etc...)
If you're not sure and experiencing heating problem could be also blending door, recirculate door, heater control valve, bad t-stat, incorrect cooling liquid level and so on...
Hope it will help

Dec 21, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Heater core replacement 2002 grand cherokee V 6

Youu didn't provide a lot of information about your problem. Jeep G Cherokee s are experiencing a lot of heating problems but the root cause is not formely related to the heater core. However, assuming that the diagnostic has been confirmed and that the job has to be done it has to be considered as a major job. The center console, the steering, the complete dash have to be removed just to access the casing where the heater core, the A/C evaporator, the fan and different doors (blending and recirculate) components are located. Let's say 9 to 12 labour time by a technician, plus parts.

So my advise is make sur your problem is really the heater core. By instance, if you have no heating it could be related to right or left or both of your blending doors being defective.

Hope it will help

Dan (sorry for my english)

Dec 02, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Heater Core replacement

yes you do have to disconect the a/c dash removal for jeep.hope this helps

Oct 04, 2009 | 2000 Jeep Grand Cherokee

1 Answer

How to change out heater core on 2002 Jeep Grand Cherokee

this is a very complex procedure and one not really to be done outside of a dealership as the dash and interior require removal to gain access to heater core

Jun 25, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Heater core 2002 jeep grand cher.

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.

Jan 30, 2009 | 2002 Jeep Grand Cherokee

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