Buick Regal Owners & Service Manuals
Buick Regal 2018-2026 Service Manual / Brakes / Disc Brakes / Diagnostic Information and Procedures

Buick Regal: Diagnostic Information and Procedures

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 Brake Rotor Thickness Measurement

Special Tools CH-230 - A Disc Gauge Equivalent regional tools: Special Tools WARNING: Refer to Brake Dust Warning. 1. If the inboard friction surface of the brake rotor is not accessible, reposition

 Brake Rotor Assembled Lateral Runout Measurement

Special Tools GE-571-B Hub and Wheel Runout Gauge For equivalent regional tools, refer to Special Tools. WARNING: Refer to Brake Dust Warning. NOTE: Brake rotor assembled lateral runout (LRO) exceed

 Front Disc Brake Mounting and Hardware Inspection

WARNING: Brake Dust Warning. 1. Inspect the fluid level in the brake master cylinder reservoir. 2. If the brake fluid level is midway between the maximum-full point and the minimum allowable level t

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 Lighting Features

Entry Lighting Some exterior lamps and most of the interior lamps turn on briefly at night or in areas with limited lighting when the Remote Keyless Entry (RKE) transmitter button is pressed. After about 30 seconds the exterior lamps turn off, then the dome lamps and remaining interior lamps dim t

 DTC B2590 or B2595

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

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