The blower to the heater and air conditioning went out. I have had it replaced 2 times in less than 3 years. Now its out again. It's difficult to drive in winter with no blower to a heater and difficult in summer with no blower to the air conditioning. A mechanic I went to said he has seen multiple Jeep with this same issue. He believes it may be the cable wires due to the nearness to the engine and they were not big enough to handle the heat. Is this true" he also thought Jeep was aware of this issue. If so, how do I get this fixed so it works properly and not go out every year" every once in a "blue moon" the blower will come on for a couple seconds but will not stay on.

- Lakewood, CO, USA

We have owned our 1999 Grand Cherokee since 1999 - its been a great car but every single issue listed on this website has befallen us. Currently @ 149K miles we have no heat on the driver side due to blend door assembly, the airbag light goes off all the time and there is no heat in the drivers side seat. I am shocked that so many people have the exact same issues and that to me says there is truly something wrong. We also took part in a class action suit that covered some of the expenses we had in continually replacing the brakes - especially the rotors which warp with out notice and can do that if you just step on the brakes to hard! even if you have just had them replaced. Cheap parts" I am a die hard Jeep owner but after reading all of these postings I am wondering if my alliance should be elsewhere"

- La Grange Park, IL, USA

Heater A/C for 1999 Jeep Grand Cherokee... failure to operate, ridiculous to repair. Makes driving in cold climates impossible, due to window fogging and ice buildup. Daimler Chrysler should recall and repair all Jeep from 1999-2004 who are all known to have this problem. They should not be allowed to disregard the customer complaints, with regards to this. This was repeated year after year, with no easy solution for customers to repair. An excessively costly and not guaranteed procedure which could create more problems, even when professionally repaired, this is a safety hazard for those who must drive in cold climates.

- Ca, CA, USA

Visibility: Defroster/defogger system. Windshield blower. Cold air out the passenger side and visibility is decreased. I have had this fixed once when I bought the Jeep 6 years ago.

- Union, KY, USA

When I turned on the heat one fall day I got hot air on the driver side and cold air on the passenger side. It doesn't matter whether I select defrost, floor, or mid-level vents.also I had the temperature settings on high. I have not repaired this yet, it is a safety issue due to difficulty defrosting the windshield. The dealership said it will be very costly. It is not intermittent because it is always failed.

- Lyndeborough, NH, USA

Ac blend doors don't work causing my heat/ac to only work on have the car at a time. In the winter my defroster is only able to defrost half my windshield and the other side has ice cold air coming out the vent witch makes it unable to defrost and causes me to drive with half a defrosted windshield. So half the car gets heat the other half gets ac all winter long no matter what setting you put the system on, this will eventually cause a accident if not addressed.

- Ashburn, VA, USA

The blend doors on my 1999 Jeep Grand Cherokee limited have broken giving me no heat during the winter. I cannot afford to fix the problem as I do not have $1200 for fix it. This is a travesty and an indication of just why the american big three are in so much trouble. This vehicle is the worst vehicle that I have personally ever owned.

- Tucson, AZ, USA

Blend \ actuator doors are "stuck" open on the passenger side. That's outside air coming in all the time through the defroster, dash vents, foot wells and the rear passenger side foot area. Tough in the winter! had the problem while under warranty, but dealer said they couldn't find anything wrong. Now, 2 years later, they say it's the blend doors and maybe the evaporator unit also. They quoted $1700. To pull the dash and repair. This is on our 1999 Grand Cherokee limited with now 117,000 miles. Don't want to go through another winter with cold air coming in, and afraid the entire system will fail. With this economy, also don't have $1,700. To put into the truck either. I believe the dealership was aware of the problem first time around. After learning about the on-line chat rooms regarding Jeep, I see that about 20% of all Grand Cherokee limited and overland owners are having this problem. Chrsyler should step up and fix this!

- South Windsor, CT, USA

No incident. Faulty parts that every owner will have to repair at some time. The HVAC system blend doors fail blowing only cold air. All owner will or had this problem. Repair cost for mine was $850. This repair may have to be repeated at later dates.

- Colona, IL, USA

The heating, air conditioning and defrost ventilation system has a systematic progressive failure. The blend doors started to fail interfering with the ac and defrost and heat on the passenger side. Now I have total failure and electrical short that interferes with the speedometer and it was difficult to start and idle, I'm lucky to have gotten home.

- Harrisburg, PA, USA

Heater blend door failure heater core failure A/C evap failure.

- Crestview, FL, USA

Blend door failure in my Jeep. Blows cold air all the time.

- Anna, OH, USA

When the heat is turned on in my 1999 Jeep Grand Cherokee, cold air blows out of the passenger-side vents, freezing my passengers. I have read that this is a problem that all 1999-2004 Grand Cherokee have, and Jeep should put out a recall. This is a very expensive repair!

- Pickerington, OH, USA

When I bought the vehicle from Jeep dealership I was told that there was a problem with ac/ heating unit and it had been fixed. Not long after I have no heat and no ac coming out of my passenger side vents. Now I have no heat or a.C out of any vents and all I get is outside air.

- Ocala, FL, USA

I have a 1999 Jeep Grand Cherokee limited. The blend door is bad and I have no defrost or heat on the driver side of the Jeep only cold air.

- Galloway, OH, USA

Windshield visibility problem caused by defective blend door on zone control for heater, causing unsafe visibility issue in inclement weather.

- Evans, GA, USA

HVAC system that breaks on everyone and its not a recall.

- Tooele, UT, USA

1999 wj Grand Cherokee limited- blend door problem. I had the bled door problem fixed on my Jeep fixed about 40K miles ago. This issue has cropped up again. I travel to the mountains on the weekends and external temp usually get below freezing. Last weekend the blend door problem came up suddenly. There is no heat on the drivers side and the windshield defrost functions. Due to the windshield being fogged up, I almost drove over the cliff avoiding oncoming traffic. Please consider this lack of heat as a safety issue.

- Boise, ID, USA

1999 Jeep Grand Cherokee ltd, blend door on HVAC/defroster stopped working.

- Williamsburg, VA, USA

Fogging of windshield due to improper design of the HVAC on my Jeep. This si the second time it has broken, with only 55,000 miles on my 99 Grand Cherokee limited.

- West Bend, WI, USA