Question about Jeep Cherokee

1 Answer

I need to replace the heater core in my 1999 Jeep grand Cherokee with the 4.7L engine. I just can't bring myself to pay the 1000.00 for a shop to do the work. I'm a shade tree mechanic. I have worked on all kinds of trucks and Hot rods but the newer cars are a pain in the a**. Is this something I can do at home? I have lots of tools.

Posted by on

  • 1 more comment 
  • jdarstvac Nov 11, 2010

    Disconnecting the A/C, evacuating, and recharging is not a problem. I have all the equipment.

  • jdarstvac Nov 12, 2010

    Thanks for the advise. I know it's a big pain but it's a matter or principle. I'm not going to give some guy a grand for doing something that I can do myself. (even though it will take me twice as long and cost me 2 grand)

  • jdarstvac Nov 12, 2010

    Yes, this was helpful. I don't need to continue on this any further.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,168 Answers

Hello Jdarstvac.

This is a fairly big job. Book time is 6 hours for an experienced mechanic with proper equipment.
I looked in the service manual and it is several pages long, too much for me to send here.
If you decide to undertake the job, get a proper service manual. One from the dealer or subscribe to All Data on line.
You will need to get the air conditioning system evacuated and recharged as the AC system needs to be disconnected to remove the heater box.
You could probably do it given enough time. Take pictures as you remove items so you know where the parts are when reinstalling.
Good luck with the job.

Thank you for using FixYa.


Posted on Nov 11, 2010

  • FUBAR Nov 11, 2010

    It appears you are well equipped J.
    If you have tools such as those and have the know how, go for it!
    The job is such a pain, lots of screws and hardware, hoses and wires.
    And a lot of it done upside down on your back.
    I'm getting too old for that stuff, Ha!

  • FUBAR Nov 12, 2010

    Thank you for the rating, it is much appreciated.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

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

How do i replace/install a heater core for a 1999 limited edition jeep cherokee 4.0 liter 6cyclinder

I would make sure the core is the problem. You may have a heater control valve that cuts off flow to the core by vac. or a blend door that cuts off air flow thru the core.
You will need a shop manual to replace the core. The dash and console have to come out, along with discharging the ac.

Dec 18, 2012 | 1999 Jeep Grand Cherokee

1 Answer

How do I replace the heater core on 1999 Jeep Grand Cherokee Laredo

if u are not a mechanic dont even try! the dash comes off the the climet control box comes offf then you open the box tahe out the heater core replace it .

Dec 01, 2012 | 1999 Jeep Grand Cherokee

1 Answer

I need help with heater core replacement for my 1999 jeep grand cherokee laredo

Changing the heater core requires complete removal of the dash panel and plenum box. To do this you have to remove the steering wheel, steering column, evacuate and recharge the refrigerant system and drain the radiator. I would only consider changing the heater core if it is physically leaking into the passenger compartment. If the problem is heat transfer to the HVAC system only, the problem is more likely with the blend doors. Check for pictures and diagnostic information.

Jan 10, 2010 | 1999 Jeep Grand Cherokee

2 Answers

How do you install a heater core in a 1999 jeep grand cherokee?

I suggest review the ZJSecc24-Heating-and-Air-Conditioning

First you'll need remove the heater A/C unit from the vehicle; after, remove the heater core retaining screws, and finally, pull the heatrer core straight out of the housing.

Hop helped with this (remember rated this help) Good luck.

Nov 30, 2009 | 1999 Jeep Grand Cherokee

1 Answer

How do i get to the heater core to replace it?

It is a big job. I did this on my carport about 6 months ago. It is an all day job because you have to take every part of the dash down to the firewall. Be carefull when installing the new on because the work area is tight and the cores are brittle. Try

Nov 02, 2009 | 1999 Jeep Grand Cherokee

1 Answer

1999 Grand Jeep Cherokee (limited) shuts off while driving

Starter...if the starter is old, it is getting heat soaked. Replace the solenoid.

Mar 17, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Jeep grand Cherokee 1999 engine coolant temperature gage problem

please have your thermostat replaced first..cheapest option first.perhaps thermofan is kicking in at wrong time sensor?

Mar 03, 2009 | 1999 Jeep Grand Cherokee

3 Answers

Heater blows cold air when idle

Sounds like you may have a partially plugged heater core. You could flush this out separately, from flushing radiator & engine block. Diconnect heater hoses going to your heater core and clamp off, so not to loose coolant from engine. Now hook up separate hose to one side of heater core pipe and flush out with typical garden hose. Repeat procedure on both heater core inlets. Reconnect original heater hoses and test difference. You may have to add an additional litre of antifreeze. If this don't work i suggest changing heater core. Good luck.........Ron.

Jan 03, 2009 | 2000 Jeep Grand Cherokee

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

50 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

80339 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides