Automatic Transmission Control Module problems of the 2007 Saturn VUE

Upon a cold start, when the vehicle has rolled about ten feet, forward or reverse, with no input on the accelerator, there is a whir from the engine compartment, akin to a stepper motor noise, and the vehicle accelerates on its own. In reverse, applying the brakes stops the car, and then selecting drive, the vehicle responds to the accelerator correctly. The same thing happens in forward, but in most cases the accelerator is engaged to move forward. The problem does not seem to occur when the car is warmed up and being driven under normal use. In reviewing the shop manuals, there is an electronic throttle control motor, which I assume is a stepper type motor, in the throttle body assembly. This is controlled by the throttle actuator control(tac) and the power control module(pcm). I assume that the motor is failing, but have not experienced a reduced engine power mode or engine shutdown mode event. If this part is failing it should be covered by the emission warranty of 8 years/80,000 miles, but unfortunately the car is 9 years old. I will approach my dealer and Saturn about possible coverage under warranty, but have had difficulty with them in the past. I feel this is a safety issue, as it can catch a driver unaware and create a possible accident scenario.

The contact owns a 2007 Saturn Vue. After purchasing the vehicle in July of 2007, the contact had to take the vehicle back to get a new one three hours later. When he took the vehicle to the dealer for 5,000 mile servicing, the dealer discovered a recall, informed the contact, and made the repairs. Within twenty days, the contact had to have three hybrid electrical wiring harnesses replaced, the entire vehicle was re-wired, and a new transmission was installed. All the instrument panel and air bag lights illuminated intermittently. The dealer stated that if the air bag light is illuminated, it is inoperable. On two separate occasions, the contact had to have the failures repaired again. The dealer stated that there was a new recall related to the emission, but they could not perform the repair. They recommended a shop (freemond auto) and they replaced the factory fitting for that make and model. While at a traffic light with the brake pedal depressed, the engine shut off and restarted. The vehicle rolled back while the brake pedal was still depressed. The contact is still experiencing wiring and transmission failure. The failure mileage was 4,800 and current mileage was 16,311. Updated 4/7/08 updated 04/07/08.

2007 Saturn Vue was serviced because of the check engine and battery lights illuminating. Dealer replaced and fixed several problems. Consumer was still not happy with the way the vehicle ran. The consumer stated the radio was replaced for the third time, and there was even more wind noise from the driver side door with the new rubber seal. The consumer also stated major loss of power, rough upshifting, double downshifting while braking and poor fuel economy. The consumer was told a new calibration was made to the pcm as part of the correction made along with the wiring harness to make the check engine and battery lights go off.