Buick Regal: Diagnostic Information and Procedures

 Diagnostic Information and Procedures

LEAK TESTING Special Tools GE-41447 A/C Tracer Dye-Box of 24 GE-42220 Universal 12V Leak Detection Lamp GE-43872 Fluorescent Dye Cleaner GE-50078 Electronic Leak Detector GE-50744 R-1234yf PAG Oil Injection Hose GE-50745 R-1234yf POE Oil Injection Hose Equivalent regional tools: Special Tool

 DTC C0277 or C0890

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 Descriptors D