Buick Regal: Diagnostic Information and Procedures

 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