Software problems of the 2006 Chevrolet Impala

The contact owns a 2006 Chevrolet Impala. The contact stated that while reversing at approximately 10 mph, the engine stalled without warning. The vehicle restarted and resumed normally. The failure recurred numerous times. The failure occurred the same day the vehicle was serviced under NHTSA campaign number: 14v355000 (electrical system). The contact had not experienced the failure prior to the recall repair. The vehicle was taken back to dealer where the computer software was updated however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 156,446.

The 2006 Impala since the day we purchased it has a high pitch ear piercing loud noise that comes mainly from the drivers side speaker and last about 23 minutes. Turning the directional on either way will make the noise cut off. Our vehicle has been to the dealer 5 times now and they are unable to remedy or know what it is??? we have asked since day one for gm to replace the vehicle. Several items have been replaced on our new vehicle and we feel we have a "lemon". Gm refuses to answer us and do anything about this defective vehicle. The seat belt kit has been replaced and updated software to the radio as well. There is rust underneath the vehicle as well. All these issues were seen by us and the service dept 2 days after purchasing the vehicle. We need help!!!!! we feel the sound we are hearing is some type of electrical warning or defect. The turn signal being connected to the problem indicates such. We have the noise on tape and got a gm service supervisor to witness the technical issue happening (6-10-06), the vehicle then went in for the 5 time and they replaced the amplifier. The noise came back the next day 6-18-06, that we drove it. It has been in 5 times now since the day we bought it 4-15-06 and we have had nothing but problems with it.