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:
Front Brake Caliper Overhaul (J60)
Disassembly Procedure
WARNING: Brake Dust Warning.
WARNING: Brake Fluid Irritant Warning.
WARNING: Do not place fingers in front of the caliper piston(s) in an
attempt to
catch or protect it when applying compressed air. The piston(s) can fly
out with force and could result in serious bodily injur
DTC B25F4 or B25F5
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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