Buick Regal: Seat Belts

 Automatic Transmission

The mode or selected gear is shown in the instrument cluster. P : This position locks the drive wheels. It is the best position to use when starting the engine because the vehicle cannot move easily. Warning: It is dangerous to get out of the vehicle if the shift lever is not fully in P (Park) wit

 DTC P0504

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptor DT