Buick Regal: Diagnostic Information and Procedures

 Oil Pan Cleaning and Inspection

Preliminary Procedure 1. Ensure proper use of room temperature vulcanizing (RTV) sealant. 2. Thoroughly clean the oil pans and mating surfaces. Inspect each component, O-rings, and fasteners, and replace as necessary. 3. Remove all sludge and oil deposits. 4. Inspect the oil pan for cracking nea

 DTC C0870

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