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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POWER STEERING SYSTEM DESCRIPTION AND OPERATION
The hydraulic power steering pump is a constant displacement vane-type pump
that provides hydraulic pressure
and flow for the power steering gear. The hydraulic power steering pump is
either belt-driven or direct camdriven.
The power steering fluid
COOLING FAN DESCRIPTION AND OPERATION
Fig. 49: Cooling Fan Description and Operation
The engine cooling fan system consists of 2 electrical cooling fans and 3 fan
relays. The relays are arranged in a
series/parallel (S/P) configuration that allows the engine control module (ECM)
to operate both f
