Buick Regal 2018-2025 Service Manual / Accessories and Equipment / Mirrors / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
- DTC B154A or B154B
- Symptoms - Mirrors
- Automatic Day-Night Mirrors Malfunction
- Power Mirror Malfunction (with A45)
- Power Mirror Malfunction (without A45)
- Power Mirror Tilt Inoperative in Reverse
READ NEXT:
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
SEE MORE:
Fuel Rail and Injectors Cleaning and Inspection
Special Tools
EN-47909 Injector Bore and Sleeve Cleaning Kit
EN-49245 Fuel Injector Seal Install/Sizer
EN-50791 Fuel Injector Nozzle Installer
EN-51105 Fuel Injector Seal Installer
For equivalent regional tools, refer to Special Tools.
1.
Remove and inspect the fuel rail insulator assemblies
DTC B3031
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
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