Buick Regal: Diagnostic Information and Procedures

 Piston, Connecting Rod, and Bearing Installation

NOTE: This procedure is not used in Europe. Special Tools EN-43953 Ring Compressor - 86 mm EN-43966 Connecting Rod Guides EN 45059 Angle Meter For equivalent regional tools, refer to Special Tools. 1. Ensure the piston ring end gaps are positioned 90 degrees to each other. Upper compression

 DTC B3984

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