Buick Regal 2018-2025 Service Manual / HVAC & Restraints / HVAC - Automatic
Buick Regal: HVAC - Automatic
SPECIFICATIONS
FASTENER TIGHTENING TORQUE SPECIFICATIONS
Reusable Threaded Fastener Tightening Specifications
NOTE: All fasteners listed in this table can be reused after removal.
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SCHEMATIC WIRING DIAGRAMS
HVAC WIRING SCHEMATICS
HVAC Module Power, Ground, Serial Data, and Subsystem References
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HVAC Controls
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A/C Compressor Controls
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Blower Motor
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Mode and Temperature Door Actuators
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Temperature Sensors
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Windshield and Sunload Sensors
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Heater Coolant Pump
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Diagnostic Information and Procedures
HVAC COMPONENT REPLACEMENT REFERENCE
DTC B0163
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.
Diag
DTC B0163, B0183, or B1405
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.
Diag
SEE MORE:
Lock Cylinder Coding - Ignition
The ignition lock cylinder uses 8 key cut positions, 1 - 8. The ignition
cylinder tumblers (3) are located
on alternate sides of the cylinder (5). They are not snap-in and are not
self-retaining. It follows the key
code with the first tumbler being the first depth of the key code, closest to
the
Cylinder Head Removal
Special Tools
EN 38188 Cylinder Head Broken Bolt Extractor Kit - or equivalent aftermarket
tool
For equivalent regional tools, refer to Special Tools.
1.
Remove and discard the cylinder head bolts (1).
CAUTION: In order to prevent damage to the valves and injectors during
cylinder head
removal,
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