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:
Head Restraints
If equipped with base seats, the
vehicle's front seats have adjustable
head restraints in the outboard
seating positions.
If equipped with GS Model seats,
the vehicle's front seats have head
restraints in the outboard seating
positions that cannot be adjusted.
Warning:
With head restraints that are
DTC P0340, P0341, P0365, or P0366
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Diagnostic
System Check - Vehicle
Review the description of Strategy Based Diagnosis: Strategy Based
Diagnosis
An overview of each diagnostic category can be found here: Diagnostic
Proced
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