Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

3) - This step tests the system for restrictions.
5) - This step tests the following components for the following conditions:
- The pump for internal leaks
- The power steering pipes for kinks
6) - This step tests the ability of the pump to regulate flow at maximum pressure.
8) - This step tests the ability of the pump to regulate flow under normal operating conditions.
10) - This step test the internal components of the pump and the gear.

Fig 1: Power Steering System Test Procedures (Steps 1-3)

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Fig 2: Power Steering System Test Procedures (Steps 4-11)

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Fig 3: Power Steering System Test Procedures (Steps 12-17)

Courtesy of GENERAL MOTORS CORP.