Buick Regal 2018-2026 Service Manual / General Information / Waterleaks
Buick Regal: Waterleaks
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Diagnostic Information and Procedures
WATERLEAK TEST PREPARATION
GM vehicles are designed to operate under normal environmental
conditions.
The design criteria for sealing materials and components takes into
consideration the seali
Repair Instructions
BODY WATERLEAK REPAIR
WARNING: If the vehicle interior is exposed to moisture and becomes
soaked up to
the level of the sensing and diagnostic module (SDM), the SDM and SDM
harness connector must be
SEE MORE:
Lighting
Touch and the following may
display:
Vehicle Locator Lights
Exit Lighting
Left or Right Hand Traffic
Adaptive Forward Lighting
Vehicle Locator Lights
This feature will flash the exterior
lamps and allows some of the
exterior lamps and most of the
interior lamps to turn on briefly
when on the
DTC P0521, P0522, or P0523
DTC Descriptors
DTC P0521
Engine Oil Pressure Sensor Performance
DTC P0522
Engine Oil Pressure Sensor Circuit Low Voltage.
DTC P0523
Engine Oil Pressure Sensor Circuit High Voltage
Diagnostic Fault Information
1. Engine Oil Pressure Indicator Malfunction
Circuit/System Description
The engine oil pr
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