Buick Regal 2018-2025 Service Manual / Accessories and Equipment / Mirrors / Diagnostic Information and Procedures

Buick Regal: Diagnostic Information and Procedures

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DTC B154A or B154B

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

Symptoms - Mirrors

NOTE: The following steps must be completed before using the symptom tables. 1. Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the follo

Automatic Day-Night Mirrors Malfunction

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 Diagn

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DTC B389A

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 Descriptor DT

Courtesy Lamps Malfunction

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

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