Question about 1999 Jeep Grand Cherokee

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Heater problem I only have heat on the passenger side only the drivers side and the middle vents stay cold. the heat heat indicater is on high any ideas what could cause this.

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  • butterfly__3 Sep 25, 2008

    I have air coming out, lots, but still only hot air on the passenger side only, but I noticed now that when I shut the truck off I can hear noises like squeeking behind the sterio. and it lasts for about 30 seconds and stops.

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Butterfly 3 and samson1 1999-2004 have a bad HVAV sub assembly . There is three doors that have open and close. A motor turns the doors up and down ,The piece of the hinge that sticks out of is plastic and strips out and the doors will not work right . go to wjjeeps.com and look for hvac sub assembly replacement. It will tell you all about it but the short of it is you have to remove the dash, put in the newly revised assemblies. It looks like a bad job but it has to be done . There is a few fixes on line that replace the to lower doors but not the recirculation door , and you should replace all three and you won't have to worry about it again. On the wjjeeps.com sight it tells you how to get the code from your temp deplay and a list of codes .The codes tell you what door is not working . But the bottom line is every jeep grand cherokee 1999-2004 has the bad assembly and it has to be replaced .the part numbers and the cost is on the same web sight as above .I checked out the cost to have the dealer and near by shops to do the job and found at dealers 1000 to 1500 shops 650 laber and 180 for the 2 parts needed. Im going to take the dash off and get the new parts and do it my self if I have to, but I printed the 4 part 50 page how to from wjjeeps.com and showed it to my wife and I think she might give me the go ahead to take it to the shop wish me luck,Steve

Posted on Sep 28, 2008

  • steve m
    steve m Mar 24, 2014

    Go to this link and read about whats going on with your jeep. Jeep knows about the problem and it is a defect in the plastic parts that break and causes the doors not to open. Jeep will not fix the problem for free even tho it is a platic part that doesn't do what it should do. This is the reason I will never buy a Jeep again. Jeep wants you to pay them to fix there bad part. because it involves taking the entire dash out of the jeep. When a company knowingly does this to there customers thats when I stop buying there product.

  • steve m
    steve m Mar 24, 2014

    http://wjjeeps.com/hvac_sub_assembly.htm...

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Sounds like the duct work inside the dash as come apart.Feel around up behind the dash and see if you can feel the air blowing out.

Posted on Sep 23, 2008

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http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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