Cadillac 2007 XLR Owner's Manual page 98

Reach under the driver's side of the instrument
panel and pull down on the manual release lever,
which is located behind the parking brake
pedal. Pull down on the yellow tab. If the parking
brake does not release, you should have your
vehicle towed to your dealer for service.
Notice: Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake system
parts. Verify that the parking brake is fully
released and the brake warning light is
off before driving.
98