Buick Regal Owners & Service Manuals

Buick Regal: Diagnostic Information and Procedures

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 DTC C0000

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. Diag

 DTC C0575, C0580, C0585, or C0590

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. Diag

 DTC C0615, C0620, or C0625

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. Diag

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 Roof

Sunroof If equipped, the sunroof only operates when the ignition is on or in ACC/ACCESSORY, or when Retained Accessory Power (RAP) is active. Sunroof Switch The vehicle may have one of two different switch configurations. Open/Close (Manual Mode) : Press (1) or (1) to the first detent to open t

 Radiator Drain Cock Replacement

Preliminary Procedures 1. Raise and support the vehicle. Lifting and Jacking the Vehicle. 2. Place a drain pan under the drain cock. Radiator Drain Cock Procedure Fill the cooling system to the proper level. Start the engine and check for coolant leaks. RADIATOR REPLACEMENT (2.0L LT

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