Buick Regal 2018-2026 Service Manual / Accessories and Equipment / Wipers and Washers / Repair Instructions
Buick Regal: Repair Instructions
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Windshield Wiper and Washer Switch Replacement
Preliminary Procedures
1. Steering Column Lower Trim Cover Replacement.
2. Reposition the steering column upper trim cover as necessary.
Windshield Wiper and Washer Switch
Procedure
Disconn
Air Inlet Grille Panel Replacement
Preliminary Procedures
Windshield Wiper Arm Replacement - Remove [2x].
Air Inlet Grille Panel Retainer [6x]
Air Inlet Grille Panel
Procedure
Unlock the retaining tabs.
AIR INLET GRILLE PANEL WA
Description and Operation
WIPER/WASHER SYSTEM DESCRIPTION AND OPERATION
Wiper/Washer System Components
The wiper/washer system consists of the following electrical components:
Windshield Wiper Relay
Windshield Wiper Speed C
SEE MORE:
DTC P0461-P0464, P2066, P2067, or P2068 (with F46 (AWD) )
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
Line Pressure Check
Special Tools
EN-21867 Pressure Gauge
EN-21867-50 Transmission Line Pressure Adapter
For equivalent regional tools, refer to Special Tools.
Line Pressure
1. Apply the parking brake and chock the wheels.
2. Install an SLT current measuring machine.
If the machine is not available, installation
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