Question about 2000 Jeep Grand Cherokee

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2000 grand cherokee heat not working on passenger side and barely blowing on driver's side.....plugged heater core? engine thermostat?

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It is the heater blend door.....you can buy the piece off ebay for around 30.00 dollars the dealer can charge upwards of 800 dollars to fix because they take the steering column and dash apart...you can go through the glove box and cut a whole into ac system and access the blend door. old one slides out new one slides in this is farely easy and takes less than an hour

Posted on Feb 07, 2013

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Posted on Jan 02, 2017

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SOURCE: 2001 Grand Cherokee Heat on one side cold air on the other side?

The blend door on the passenger side has broken. Jeep has made a replacement section for the heater box assembly so you don't have to buy the whole thing. You will need to remove the heater/A/C box to replace the part. I have done quite a few of these repairs to fix the problem

Posted on Nov 22, 2008

  • 417 Answers

SOURCE: 2000 jeep grand cherokee v8/heater core

Yes it's the heater core, It's a complicated diy job and unless you are an experienced mechanic you are going to need a good workshop manual for the job.

Best of luck.





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Posted on Oct 22, 2008

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SOURCE: Heater problems on my 2000 Jeep Grand Cherokee. Please Help!!

THis is a know problem with Jeep GC. If only one side is cold and the other is hot and there are no controls error codes. It is likely a broken temperature blend door on the faulty side (w/ dual controls). Dealer charges a lot to fix ~$800. There is a kit and instructions sold on EBAY to replace the part for $100. Seller claims that a relative novice can fix w/o removing the entire dash board as the dealer does. Has sold hundreds of kits....people seem satisfied....you may check it out. Search Heater Blend Door Jeep on ebay. Replacement parts are aluminum instead of OEM plastic.

Self Diagnostics on HVAC system. Jeep GC has built in diagnostics and will return error codes on the temp display if it is otherwise. Simple to display.
1) Press A/C and Recir button simutaneously
2) Rotate driver temp control knob clockwise then release buttons
3) If no controls error a code of "0" or "00" will be returned.
4) Error codes listings can be found on-line if anything but zero

Dealers charge $45 to run the same check

Posted on Jan 21, 2009

keeperoffire
  • 106 Answers

SOURCE: 01 jeep grand cherokee heater works on driver side

You have 2 posibilities.there are 2 motors on the heater box that run the blend doors for each side.That side motor may be bad or worst case the blend door arm that connects to the motor is broken.If it is broken the whole dash has to be removed so the heater box can be taken out to replace the blend doors.Big job,do a heater core while your there if you fix it so you dont have to do it again.

Posted on Mar 09, 2009

wracefans24
  • 1985 Answers

SOURCE: 1996 jeep grand cherokee blower works but no heat

Since your blower is working and it is a heat issue,thats where we'll start,First thing is have you checked the coolant level in the radiator when engine is cold,make sure it is filled to top,next verify you have coolant in reserve ,Start your van and get it up to normal operation temperature,If your heat gauge on the dash works correctly it should be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.

Posted on Jan 12, 2010

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1 Answer

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Check to see that the blend door linkage is hooked up. Doubtful it is heater core, as you had heat to one side and not the other. Check coolant control valve linkage, verify it is moving the coolant valve from off to on when you switch temperature from cold to hot. Verify you have coolant flow to the heater core by feeling the heater hoses where they enter the firewall. If all checks out well, then look at hvac controls individually.

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blend door actuators. If you have the AZC system (automatic zone control) used in the limited (the one with dual digital readouts) you can use the on board diagnostic to read the code. while running, press the a/c and recirc buttons at same time then turn drivers temp control one click clockwise. release a/c and recirc buttons. If you have codes that show up, write them down and google search for these codes. It will tell you exactly what is wrong.

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