Throttle valve plate sticking. The gas pedal has to be stepped on hard when you first start up after setting a while. I'm told this is a common problem with the unit uses on many of their vehicles mine is on a 2001 Buick Lesabre with a 3800 engine. Waldecker Pontiac, brighton, mi told me this item wasn't covered on the extended warranty I purchased (6yr/100000 mile) I had 94,000 miles on the vehicle but the problem has been around for at least 10000 miles. I now have 101600 I'd like to know why it wasn't a warranted item. This also could be construed a safety item as when you step hard on the pedal the car surges forward slightly. I'm aware of it so I automatically hit the pedal and release.

- Howell, MI, USA

Car in for oil change. Dealer service recommended replacement of upper plenum and gasket. This is a very common problem with Buick engines.

- Rochester, MN, USA

Consumer states that the vehicle will automatically shut off with out any notice. Contacted dealer. Nlm

- Detroit, MI, USA

The rear rotors were hanging up, make noise, pulsate, and the front end of the vehicle vibrates. The consumer states that the front end vibrates, the door assembly is misaligned, sticks out, and noisy, the tire was changed but failed balance and theres a vibration, the engine stumbles/stalls, the interior cloth by the top of the windshield is loose-3 times, can hear a moan coming from the windshield, the onstar antenna fell apart, the torsion rod vibrates, the steering shudders at slow speeds and on turns and the hose/bulletin # 99-02-32-007A, power steering, and hydraulics have been replaced-8 times, the A/C blows hot air/bulletin #990139-004A, and the vehicle pops/bangs when going over bumps and making turns, theres a rattle noise from under vehicle/possible exhaust or air pump-cause: Intermediate exhaust pipe rattling (internal) front exhaust manifold to oxidation catalytic converter-replaced, wheel alignment (pulls to the left), there was a rattle noise from the left side of the pillar molding/removed the A-pillar trim and insulated/align/against upper dash, and getting poor fuel economy/idle air control-reppaced.

- Sun City, AZ, USA

No summary listed for above vehicle.

- Portland, OR, USA

The day vehicle was purchased, while driving home the service engine light came on, vehicle was taken to nearest dealer to have it inspected, in which the egr valve connector was repaired, however five days later the engine light appeared again, consumer took vehicle to another dealer and was informed that he could not promise that the light would remain off and to take vehicle back to where it was purchased to discuss the problem with them, consumer was then informed that there was a glitch in the program board, and that the problem could not be fixed until Buick sees how many other vehicles are having this problem.(letter written on behalf of client.)

- Arlington Heights, IL, USA