Engine dies at any speed without warning and without illuminating the check engine light. No error codes are stored. It acts as if someone just turned the ignition key to off and all of the gauges on the instrument panel are zeroed to the left but everything else electrical still works, starter, power windows, radio, horn, lights, power-seats, etc. Etc.. this tends to happen more often on warm days, over 88 degrees F and seems to be a shutdown of the PCM which controls the fuel pump, fuel injectors and the ignition system. When the PCM shuts down, it drops output to PCM's computer bus called the ccd. I changed the parts that the dealer wanted to change like the fuel pump, crank and cam sensors and cleaned a host of other sensors but the problem remains. The problem is with the PCM. The dealer denies coverage because the mileage has just crept over 80,000 miles although I began discussing it with them and buying parts from them back on March 5, 2005. This is an extremely dangerous condition that warrants the PCM, P/N rl044427ac through aj, on the 1999 Jeep Grand Cherokee be recalled.

- Sandy, UT, USA

Without warning the vehicle shut down. This happened at any speed and any weather. Dealer said it was the power control module (PCM), and the part was on back order. Manufacturer said they couldn't do anything to speed up the process and were trying to get the parts to the dealer as quick as possible. The consumer was on waiting list for part. The consumer was concerned about family when driving and car shuts off. The consumer said car takes about 5 minutes F to start back up, sometimes longer. Replacement of part was not included in any maintenance schedule.

- Charlotte, NC, USA

Having problems with the rear end and transfer case problems. Also stated that the vehicle has been taken to a specialist for the transfer case and rear end and they have stated that they will quit working on that type of vehicle because they are coming with to many defective problems. Dealer was contacted and stated that the vehicle is out warranty. Manufacture was also contacted and stated that they don't have any type of problems with the vehicles.

- Evansville, IN, USA

On 3 different occasions vehicle jumped into reverse from park. Engine was on. Please add additional information.

- Lubbock, TX, USA

Vehicle has been to dealer 5 times now for very rough idle, engine sag, idle undershoot, etc. PCM has been reprogrammed with current software, etc. Dealer called Chrysler and was told no fix is available for this condition. Vehicle shakes and tries to die. Very unsafe to drive as may die when trying to pull out. Dealer basically says Chrysler knows of the problem but won't fix it properly.

- Owensboro, KY, USA

Several times prior to complete power failure, vehicle decelerated on its own with a small jar as if tapped from rear, then @ 45 mph I lost complete power, no steering ability, power brakes gone, coasted to stop. No indicator lights prior to power loss, turned off A/C, radio etc. Vehicle re-started. I took to dealer next day. They had it for 3 days, & only replaced battery. Picked up vehicle on 6/28 & 6/30 vehicle shut down @ 45-50 mph same scenario, took back to dealer and they replaced module-powertrain control. Picked up 07/03, drove less than 10 mi & vehicle started the deceleration problem again.

- Sugar Land, TX, USA