Buick Regal: Repair Instructions
- Brake Pedal Position Sensor Calibration
- Headlamp Bulb Replacement - Left Side (High Beam)
- Headlamp Aiming
- Suspension Position Sensor Calibration
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Brake Pedal Position Sensor Calibration
Calibration Criteria
NOTE: Do not apply the brake pedal during the brake pedal position
sensor
calibration procedure. Any movement of the brake pedal during this
procedure will cause the calibration
Headlamp Bulb Replacement - Left Side (High Beam)
Preliminary Procedure
Windshield Washer Solvent Container Filler Tube Replacement.
Headlamp Bulb Access Cover
WARNING:
Halogen Bulb Warning.
Procedure
Rotate the cover counterclockwise to remov
Headlamp Aiming
General
Directive 76/756 EEC and ECE-Regulation 48 cover checking and aiming of
headlamps on vehicle.
Correct aiming of headlamps of vehicles should enable optimal road illumination
by the low beam
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Brake Assist System Description and Operation
System Component Description
The brake assist system consists of the following:
Brake Pedal
Receives, multiplies and transfers brake system input force from driver.
Brake Pedal Pushrod
Transfers multiplied input force received from brake pedal to brake booster.
Vacuum Brake Booster
Uses source vacuu
DTC B25FC or B25FD
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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