general problems of the 2005 Buick Rendezvous

The contact owns a 2005 Buick Rendezvous. The contact stated that while driving on a local street approximately 35-40 mph, the vehicle started losing motive power and was shuddering while shifting gear. The “service engine now” warning light was illuminated. The driver was able to pull over to side of the roadway, turn off and restart the vehicle and drove to the residence safely. The vehicle was not taken to the local dealer to be diagnosed. . The vehicle was not repaired . The manufacturer was not notified of the failure. The failure mileage was 175,000.

It feels like the transmission is going out but only sometimes. On occasion it will be driving fine then I go to pull off from a stop and it just wont really go like maybe skips 1st gear or at least part of it. It's crazy and dangerous. I do not believe it to be the transmission. Only happens from complete stop, sometimes. Buick Rendezvous 05.

I was driving the car came to a complete stop at the right light, light turned green took my foot off the brake push the gas pedal, car completely cut off, could not get it to crank, service engine light came on, I had to get the car towed, took it to the dealership, I have a 50% warranty on the engine, powertrain, and transmission. Then crankshaft position sensor need to be replace and the tranmission needed to be replaced. I only had this car for one week, when it started doing this, the car is still cutting off and in the middle of driving I have a young son, this issue is very serious doesn't matter where I am whiling driving the car just cuts off. Please help with this.

When we reach speed of 60mph it starts jumping in and out into a higher gear. This car has a transmission problem.

Transmission clunks, jumps and shifts at the wrong times and at the wrong speeds. This can be felt and heard as a loud bank and whole vehicle jerk by all passengers. Unnerving as well as concern for safety. Two trips to the dealer without any solution.