In March, 2005, with 59,000 miles, my 2002 Jeep Grand Cherokee overland, which I purchased new in August 2002, needed a new rear differential. A replacement was also needed at 80,000 (July 2006), 86,000 (March 2007), and 98,000 (April 2008). As of this writing, the dealer has had the vehicle for over 3 weeks. In replacing first the bearings, then the gears, and then the "entire rear end", they have been unable to solve the problem. Attempts to contact Chrysler have been unsuccessful. No one at the 800 numbers can offer any solutions. I have an extended warranty, so the repairs have been covered, minus my $100 deductible. But, I don't think the number of repairs is questionable. I've found a number of sites with other individuals reporting the same problem on this particular body style/model. Perhaps there is a wide spread problem..

- Mount Arlington, NJ, USA

Blend air door failure/no heat

- Daphne, AL, USA

Ventilation system making noise behind dashboard. When the A/C unit is off, once I shut off vehicle, no noise will be heard, however after running A/C, when shutting off vehicle, a moaning or creaking sound is heard, everytime. I have read this is happening to many many others. Possible "blend door" problem. This needs to be repaired. People that live in cold environments or extremely hot should not have to worry about a HVAC system breaking and then have to pay $1500 for repair.

- Salt Lake City, UT, USA

The front brake rotors have warped for the second time in 42,000 miles. Driving with these warped rotors causes the steering wheel to shake violently and brake application at the wheels to be uneven. The shaking is more pronounced when braking from speeds above 40 mph. This is a very unsafe condition especially on wet or icy surfaces. The dealer refuses to replace the rotors under warranty.

- Eau Claire, WI, USA

2002 Grand Cherokee lost heat on both zones of the dual climate control. The consumer feels that the manufacturer should fix the system free of charge.

- Peekskill, NY, USA

Duel climate control doors not working no heat on passenger side or on driver side. Windows fog up and make for dangerous driving conditions. Cost $1500 to repair and fix. At the dealership they have seen between 8-10 of these since October 2005 and it is only February 2006. When I called Jeep about the problem the customer service person told me he was "setting me straight" and that he didn't care if I was a customer again. He would not let me talk to a supervisor and he hung up the phone on me.

- Whitman, MA, USA

Jeep started shaking when brakes were applied. It was noticeable but not horrible. I live in Colorado and went up into the mountains where brakes were applied more frequently. Had a car load of girl scouts on a camping trip. When the brakes heated up, the car started shaking so violently when the brakes were applied that it was difficult to control the car. The girls were scared to death and the shaking caused me to actually pull over and put the girls out of the car to ride with other people in our group. I have never experienced anything like it in my life. I was in tears by the time we got to the camp site and all the way home it did the same thing. I never got the car over 30 mph in a 2 hour drive home. The car does not shake as violently if the brakes are not that hot, but it definitely shakes substantially. Had the rotors repaired but the brake pads were fine. This is the second set of rotors I have put on in the past 18 months.

- Boulder, CO, USA

The truck is equipped with a tire pressure regulator device. Intermittently, the device warning light illuminates on the dashboard, which is and indication of low tire pressure. When the light comes on the truck was taken to the dealership to have the tire pressure checked. The tire pressure is fine. A possibility of a malfunction in the tire pressure warning device.

- Lee, MA, USA

Jeep gc 2002-had rotors, pads and calipers replaced at 12,660 miles because of violent shaking during braking on highways at speeds of over 40 mph, had to replace everything again at 23,989 miles and now at my own cost. Manager stated that the rotors were "blue" and that someone has been riding on the brakes all the time and that is why they are worped ("blue" from high temperature). That is not the case, I do regular driving in the city and on highway. Please investigate as I have found other Jeep owners with the same problems all over the United States on the Jeep internet forums.

- Brooklyn, NY, USA