1995 Pontiac Bonneville experienced brake failure as a result of the rear wheel brake cylinders leaking. Erratic braking, swerving and the anti lock problems occurred due to the leakage. Both rear cylinders were leaking.

- Los Gatos, CA, USA

I have had this car for just over 1 year, I have had to replace the front breaks 3 times and the rotors 2 times and the calipers 2 times, also the passenger rear wheel cylinder has had to be replaced 4 times and needs to be replaced again, also the drivers side wheel cylinder is in need of repair, all 4 doors will not unlock with the remote and the drivers door will not lock with remote, on third battery for this car and there is still a short somewhere causing a fluxation in the volt meter if the blinker is on, antilock break light will come on and off and breaks have failed several times and make a loud niose if slipping, also have had to replace spark plugs almost every other month and heater blower will come on and off at will.

- Kentwood, MI, USA

Rear left wheel cylinder leaking and was replaced for a second time first time replaced at 19,725 miles, at that time both rear wheel cylinders were replaced under warranty (1/98), now on 9/27/00 the extended warranty only covers replaced the failed part, my concern is shouldn't they replace both wheel cylinders at the same time, especially from a safety perspective, the dealership and GM warranty people are telling me it's not necessary to replace both wheel cylinders, replacing one is ok and doesn't pose a threat for safety. Is this true and I am concerned that one wheel cyclinder became defective again only after 23000 miles were put on the car, this concerns me. Thanks

- Philadelphia, PA, USA