Buick Enclave: OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect
to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic
Services. See OnStar Overview for more information.
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NOTE: Examples used in this article are general in nature and do not
necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine overhaul process. Descriptions of processes
of cleaning, inspection, asse
HEATING AND AIR CONDITIONING SYSTEM DESCRIPTION AND OPERATION
Engine Coolant
Engine coolant is the key element of the heating system. The engine
thermostat controls the normal engine
operating coolant temperature. The thermostat also creates a restriction for the
cooling system that promotes a
pos
