Buick Enclave: Special Application Services
► Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000
km/3,000 mi.
► Have underbody flushing service performed once a year.
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Your vehicle is an important investment and caring for it properly may help to
avoid future costly repairs. To maintain vehicle performance, additional maintenance
services may be required. It is
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SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
Fastener Tightening Specifications
SCHEMATIC WIRING DIAGRAMS
ENGINE HEATING/COOLING WIRING SCHEMATICS
Engine Cooling
Fig. 1: Engine Cooling Wiring Schematics
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSTIC CODE INDEX
DTC P0480, P0481, P0691, P069
AIR DELIVERY DESCRIPTION AND OPERATION
The air delivery description and operation is divided into 4 areas:
HVAC Control Components
Air Speed
Air Delivery
Recirculation Operation
HVAC Control Components
HVAC Control Module
The HVAC control module is a GMLAN device that interfaces between the
o
