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November 6, 2012 Service bulletin

Steering: hydraulic power assist: power steering fluid

Chevrolet technical service bulletin PIT4208D for 2003-2013 Chevrolet Silverado 1500, 2003-2013 Chevrolet Tahoe and 2003-2013 GMC Sierra 1500 and others.

Bulletin number
PIT4208D
Component
Steering: hydraulic power assist: power steering fluid
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have a power steering pump whine noise. Technician will need to flush and refill the power steering system with Lucas Power Steering Fluid with Conditioners. Technician will replace the power steering pump with the latest design if the fluid is not available.

Owners of these vehicles have filed 974 complaints in the steering category.

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