You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be completely flushed.
Resources for the Repair and Maintenance of your 2008 Cadillac XLR V
2008 Cadillac XLR V
2008 Cadillac XLR V Problems
A Loose or worn gas cap may cause Check Engine Light to illuminate.
Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.
Failure of brake components can be caused by contaminated brake fluid. To help prevent this the Brake fluid should be flushed at the very least every 60,000 miles.
The steering wheel position sensor may fail, resulting in the service stability message being displayed.