Buick Regal Owners & Service Manuals

Buick Regal: Diagnostic Information and Procedures

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 DTC C0393

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 C0407

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 C1230 or C1231

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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 Vehicle Information Menu (VEHICLE) Items

Units : Choose between Metric or US when Units is active. Press to confirm the setting. This will change the displays on the DIC to the type of measurements you select. Speed Warning : This display is used to set the vehicle speed at which the speed warning chime sounds and the alert is displayed.

 Engine Coolant Fan Wiring Harness Replacement (3.6L LGX)

Removal Procedure 1. Front Bumper Fascia - Remove. 2. Headlamp- Left Side - Remove. 3. Engine Coolant Fan Wiring Harness (1) @ Air Conditioning Refrigerant Pressure Sensor - Disconnect. 4. Engine Coolant Fan Wiring Harness (2) @ Air Conditioning Evaporator Tube - Unclip. 5. Engine Coolant Fan

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