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:
Power Seat Malfunction (Driver Seat with Memory A45)
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
Power Transfer Unit Case Disassemble
Power Transfer Unit Case Holding Fixture Installation
Power Transfer Unit Case
Procedure
Always secure with the pivot pin after rotating.
NOTE:
The power transfer unit can be rotated 360 degrees to facilitate repair.
Special Tools
DT-3289-20 Holding Fixture
DT-36842 Transaxle Holding
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