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:
Tire Changing
Removing the Spare Tire and
Tools
Jack
Wrench
Tow Hook (If Equipped)
Extension Bolt
Insulator Pad (If Equipped)
To access the spare tire and tools:
1. Open the liftgate.
2. Remove the spare tire cover.
3. Turn the retainer nut
counterclockwise and remove
the spare tire. Place the spare
tire
Symptoms - HVAC Systems - Automatic
NOTE: The following steps must be completed before using the symptom
tables:
1. Perform the Diagnostic System Check - Vehicle before using the HVAC System
Malfunction
procedure in order to verify that all of the following are true:
There are no DTCs set.
The control modules can communicate via
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