Low Oil Pressure Due To Steering Gear; Low Oil Pressure Due To Steering Pump; Groan Noise In Steering Pump; Growl Noise In Steering Pump - GMC chervolet camaro 1999 Service Manual

Steering
Power Steering System 2-13
Low Oil Pressure Due to Steering Gear
Problem Action
There is low pressure due to the Inspect the steering gear for the following conditions:
steering gear.
• A scored housing bore
• Leakage at one of the following areas:
- The valve rings
-The seals
Low Oil Pressure Due to Steering Pump
Problem Action
There is low pressure due to the Inspect the steering system for the following conditions:
power steering pump.
• A stuck or inoperative flow control valve
• A pressure plate that is not flat against the ring
• An extremely worn ring
• Scoring on one of the following components:
- The pressure plate
- The thrust plate
- The rotor
• Vanes sticking in the rotor slots
• A break or crack on one of the following components:
- The thrust plate
- The pressure plate
• A high internal leakage
Groan Noise in Steering Pump
Problem Action
There is a groaning noise in Inspect the pump for the following conditions:
the pump.
• Air in the fluid
• A low fluid level
• A loose pump mounting
Growl Noise in Steering Pump
Problem Action
There is a growling noise in the Inspect the system for the following conditions:
power steering pump.
• Excessive back pressure that is caused by one of the following conditions:
- A restricted hose
- A restricted steering gear
• Scoring on one of the following components:
- The pressure plates
- The thrust plate
-The rotor
• A worn ring
Whine Noise in Steering Pump
Problem Action
There is a whining noise in the power Inspect the system for scoring on one of the following components:
steering pump.
• The power steering pump shaft bushing
• The pressure plates
• The vanes