Buick Regal 2018-2026 Service Manual / HVAC & Restraints
Buick Regal: HVAC & Restraints
- Heating, Ventilation, and Air Conditioning
- Specifications, Visual Identification
- Diagnostic Information and Procedures
- Repair Instructions
- Special Tools and Equipment
- HVAC - Automatic
- HVAC - Manual
- Seat Belts
- Supplemental Inflatable Restraints
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Specifications, Visual Identification
SPECIFICATIONS
FASTENER SPECIFICATIONS
Single Use Non-Threaded Fasteners/Components
NOTE:
All fasteners/components listed in this table MUST BE DISCARDED and replaced
with
NEW after removal.
Applicat
Diagnostic Information and Procedures
LEAK TESTING
Special Tools
GE-41447 A/C Tracer Dye-Box of 24
GE-42220 Universal 12V Leak Detection Lamp
GE-43872 Fluorescent Dye Cleaner
GE-50078 Electronic Leak Detector
GE-50744 R-1234yf PAG O
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Power Transfer Unit Case Disassemble
Power Transfer Unit Case Holding Fixture Installation
Power Transfer Unit Case
Procedure
Always secure with the pivot pin after rotating.
NOTE:
The power transfer unit can be rotated 360 degrees to facilitate repair.
Special Tools
DT-3289-20 Holding Fixture
DT-36842 Transaxle Holding
DTC B256C or B256D
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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