Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 36 other vehicles, including the 2002 Pontiac Firebird, 2002 Oldsmobile Bravada, 2002 GMC Yukon XL, 2002 GMC Yukon, and 2002 GMC Sonoma. However, it is still accessible from the selected car via links, so may be relevant.
TCC may hydraulically stick on with parking brake applied and any gear range selected. TCC fluid will hydraulically apply TCC, which may cause engine to stall. A stuck TP sensor will set DTC P0742.