Buick Regal: Seat Belts

 Firing Order and Cylinder Identification

NOTE: This information is intended as a quick reference for firing order and cylinder identification only. The information provided covers many vehicles and may include some information that does not apply to the vehicle you have currently selected. 3 CYLINDER ENGINE 4 CYLINDER ENGINE 5 CYLINDER

 DTC P0627-P0629

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