TPMS valve stem on lf wheel corroded and began to leak. The leak appeared from the depths of the threads between the valve stem cap and retainer nut. No noticeable signs of corrosion on the exterior of the threaded portion of the stem. The wheel was not impacted in any way, the tire simply started losing 4-6psi per day.

- Altoona, PA, USA

2008 Grand Prix gxp front wheel cracked, losing air with 24K miles. The week before it was brake pads and rotors. Total out of pocket expenses $1,200 in two weeks. I find this absolutely unacceptable for a car with bumper to bumper coverage. Just exactly what do they cover? last I checked my wheels were between my bumpers, and if GM can't build a car road worthy of a Michigan winter they should not be allowed to sell them here. This would be alot easier to swallow if it were a used car, but new with 24K miles is absurd!

- Flint, MI, USA