Transmission Sensor problems of the 2007 Jeep Grand Cherokee

My wife was driving and just about to get onto the interstate and with no warning, she couldn't accelerate past 25-30mph. Luckily she was able to pull to the side of the road quickly without an issue and turned the car off, waited a minute and started the Jeep up again and was then able to accelerate. When talking to the dealer, they have never heard of this problem before. When Jeep was checked at a local dealer, they pulled error codes that pointed to the transmission speed sensor. Only about $700 to replace that with labor!! the sensors are all part of the circuit board and thus need to dismantle the transmission to replace the sensors. Then I get on this site and see all the complaints with the same issue. This weekend I'm going car searching to get rid of this thing.

Owned the 07 Jeep for 5 months. Vehicle has been serviced for 2 different incidents. The 1st incindent(actually happened several times) is when the vehicle would not shift during acceleration and it would force me to the side of the road where I would have to turn the vehicle on and off until it would run correctly. Was told by dealership service that it was a transmission sensor,had the part replaced-not covered by warranty. Less then 3 weeks later, 2nd incident occured when I was driving 55mph down the interstate while acclerating to get over to an exit, the vehicle threw itself back into 2nd gear and I was forced to get over into the emergency lane so as not to be struck by oncoming traffic. The Jeep had almost come to a complete stop in traffic! check engine light came on and went off after that. Dealership states the gear ratio and valve cover forced the vehicle into 2nd gear. Very dangerous!.

Upon acceleration from stop vehicle will hesitate and lose power. This constitutes a hazard to vehicle and any approching vehicles during a turn. Inspection indicates that transmission electronic control module is at fault along with a possible transmission sensor failure. The check engine light will come on. Both of these conditions ( power and check engine ) are intermittant, indicating that the module is faulty. There have been many complaints about the transmission ecm on these vehicles. The other complaints have varying symptoms but all go back to the transmission ecm. These unit should be recalled and repaired or replaced at manufacturers cost. This problem exists in many different models and years of vehicles, but always go back to this ecm unit. After investigating this problem I don't feel that the consumer is at fault or causing this to occur. Chrysler modules are and have been faulty in the past. Annecdotal evidence says that other modules in Chrysler vehicles have had problems too. Please investigate the Chrysler transmission ecm's and have them recalled.