2007 Chevrolet Impala ls. Consumer states problem with braking system according to the service invoice, the rotors were warped. Updated 08/12/10.

- Nanty Glo, PA, USA

The contact owns a 2007 Chevrolet Impala. He stated that when applying pressure to the brake pedal, the vehicle began to shake. The dealer replaced the rotors twice within 10,000 miles. None of the repairs have remedied the failure and the brakes are not functioning properly. The failure mileage was 19500 and the current mileage was 36335. Updated 10/20/09 the consumer stated the front and rear rotors were warped. Updated 10/22/09.

- Norwalk, CT, USA

The contact owns a 2007 Chevrolet Impala. Whenever the contact applies the brakes while driving downhill, she hears a thumping sound. The vehicle was taken to the dealer and they stated that the rotors needed to be replaced. The failure still persists. The speed was unknown. The current and failure mileages were 29,000. Updated 10/13/09. Updated 10/15/09.

- Lead Hill, AR, USA

The contact owns a 2007 Chevrolet Impala. While driving 20 mph, the vehicle began shaking violently. The dealer turned the rotors two times, but the failure continued. The manufacturer will be notified. The failure mileage was 7,000 and current mileage was 14,000. Updated 09/13/08. The consumer stated on while driving down steep hills, the vehicle shimmies badly. Updated 09/16/08

- Palmerton , PA, USA

The contact owns a 2007 Chevrolet Impala ltz. While driving 65 mph down a hill the contact engaged the brakes to decrease the speed and the vehicle began vibrating. The service mechanic informed him that there was a grooving problem in the rotors. The dealer installed new rotors due to the warranty. The dealer gave the contact a 2007 Chevrolet Impala loaner vehicle that had the same failure. The failure mileage was 8,000. The current mileage was 8,100. The consumer states front brakes fixed, vehicle seems to operate correctly at this time. Update 4/23/07

- Chino, CA, USA