Yukon 4WD V8-6.5L DSL Turbo VIN S (1997)
Bendix Hydro-Boost Troubleshooting
Hydraulic System Fluid Loss
CAUTION: Do not run the engine without fluid in the power steering pump reservoir. Doing so could damage the pump bearings and seals. The belt
that drives the power steering pump also drives the coolant pump and other components. Do not disconnect the belt and run the engine. A malfunctioning
power steering pump and/or system still serves as an idler pulley for the belt. If the pump is allowed to run without fluid in it, the bearings will seize up
and cause the coolant pump to stop. This can cause damage to the engine.
If the hydraulic booster system fails due to a loss of fluid, the following steps should be taken before starting the vehicle.
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If the failed part is not the power steering pump, route the pressure pipe back to the fluid reservoir.
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Make all necessary repairs. Fill and bleed the power steering system. Refer to Steering and Suspension.
Metal shavings from a worn power steering pump often contaminate the system. the hydraulic booster system should be cleaned and flushed when the
power steering pump is replaced. Refer to Hydraulic Brake Booster Service and Repair. Pipes and hoses should be removed and blown clean of all metal
