Question about 1999 Jeep Grand Cherokee

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My passenger side will not put out warm air even though the driver side works fine

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Hi, Check the vents for clogs or broken vent tubes. Which are under the dash. Good luck

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

SOURCE: air conditioner

Air doors behind dash are damaged and no longer function. Common problem with Jeeps. Removal of entire dash to repair.

Posted on Sep 09, 2008

  • 24 Answers

SOURCE: heat works on driver side, passenger side blows cold air.

Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.

Posted on Jan 03, 2009

  • 2 Answers

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

ruteng1
  • 79 Answers

SOURCE: heat works on driver side, passenger side blows cold air.

Blend door for passenger side or blend door motor has failed. Very big job to remove dash and work on it. Except the door motor is accessable from the glove box.
Rudy

Posted on Apr 29, 2009

  • 125 Answers

SOURCE: PASSENGER SIDE HEAT NOT WORKING

The passenger blend door is broken on its shaft into the air cooling assembly.
The disgnostic is very easy, the part itself is very cheap. The bad new is that the dash has to be removed to reach the HCAV assembly where the blending doors are mounted. 15 hours labour time to replace it by an experienced technician. There is a kind of bypass solution developped and 'marketted' by a company. I have not install this fix by myself so far. Up to you to check if it could be interesting for you.

www.heatertreater.net

Hope it will help
Dan

Posted on Dec 31, 2009

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this is the task i don't even recommend someone to do it yourself unless one has little more than mechanical incline. this common problems with many GM vehicle, it may not need any parts. the ac unit is working fine, the problems is, it behind the dash air flow control unit. the bad part is time consuming taking the dash apart to get to it. once behind the dash one has to know what to look for. any shop/dealers will get you on the labors, some will hit you 250-350 just to do the simple job even-though its time consuming. next time you get an oil change, see if you can talk to one of mechanics and ask does he know of any mechanic that does side work. you be surprise all the year I have worked in automotive industry, every shop has those mechanics. you can wheel and deal with them to see if he willing to do the job at agreeable price. this will you best avenue if you don't want to take the task. I know some mechanics advertise on craig list and some will even come to your home. You can also advertise it "needing a mechanic", with this economy I know lots of mechanic are starving.

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