Buick Regal: Diagnostic Information and Procedures

 Transfer Case Fluid Replacement

Removal Procedure 1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle. 2. NOTE: When performing the following procedure, use only hand tools to remove and install the drain and fill plugs. Ensure that an approved drain pan is used when draining the transfe

 Lumbar/Bolster/Massage Malfunction (AL9 or AT9)

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. Diagnostic Fault