Six problems related to automatic transmission have been reported for the 2003 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Impala based on all problems reported for the 2003 Impala.
Transmission pan bolts loosen every 25,000 to 30,000 miles.
Upon acceleration car pulls to the right. Upon deceleration or traveling in reverse, car pulls to the left.
When the vehicle accelerated from a stop on a small or large incline the vehicle rolled backwards excessively and almost caused a collision. Returned usps, 2nd attempt made 05/21/03 failed.
When on any grade of incline the car will begin to roll backwards unless gas pedal is pressed quickly and quite hard. This almost resulted in me hitting a car behind me while waiting for a red light on an incline when I removed my foot from the brake pedal. This has happened several times now and I have to keep my foot on the brake as I begin to accelerate or the roll back occurs. Also attempting to park at my daughters school where the parking spots have to be pulled up into, the car rolls back rather quickly as if it were in neutral. I have also noticed that it has some problems advancing it's gears if the engine is under strain. I'm very worried that my car rolling back will result in accident.
No crashes.
While driving, the consumer noticed there was too much play in the steering wheel. Also, the transmission was not working properly and the vehicle failed to accelerate. Dealer was notified of the problem. The dealer attempted to repair the transmission, but the vehicle was still unable to merge into freeway traffic. The vehicle pulled hard to the left and would become uncontrollable. The tires were replaced, but the problem remained.