GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 1997 🢒 Chevy P42 Commercial Chassis 🢒 Steering 🢒 Power Steering System 🢒 Growl Noise in Steering Pump

Growl Noise in Steering Pump for Chevrolet Chevy P42 Commercial Chassis 1997

Growl Noise in Steering Pump While Driving

Growl in Power Steering Pump

Step	Action	Value	Yes	No
1	Check the pressure hoses. Restriction causes excessive back pressure. Are the pressure hoses restricted?	--	Go to Step 2	Go to Step 3
2	Locate the restriction. Correct the restriction. Does the growl in the power steering pump continue?	--	Go to Step 3	System OK
3	Check the steering gear. Restriction causes excessive back pressure. Is the steering gear restricted?	--	Go to Step 4	System OK
4	Locate the restriction. Correct the restriction. Does the growl in the power steering pump continue?	--	--	System OK

Growl Noise in Steering Pump While Parked

Growl in Power Steering Pump During Parking

Step	Action	Value	Yes	No
1	Check the pressure plates. Are the pressure plates scored?	--	Go to Step 2	Go to Step 3
2	Replace the damaged parts. Flush the power steering system. Refer to Power Steering System Flushing Does the growl sound in the steering pump continue to exist?	--	Go to Step 3	System OK
3	Check the thrust plate. Is the thrust plate scored?	--	Go to Step 4	Go to Step 5
4	Replace the damaged part. Flush the power steering system. Refer to Power Steering System Flushing Does the growl in the power steering pump continue to exist?	--	Go to Step 5	System OK
5	Check the rotor. Is the rotor scored?	--	Go to Step 6	Go to Step 7
6	Replace the damaged part. Flush the power steering system. Refer to Power Steering System Flushing Does the growl in the power steering pump continue to exist?	--	Go to Step 7	System OK
7	Check the cam ring. Is the cam ring extremely worn?	--	Go to Step 8	System OK
8	Replace the damaged parts. Does the growl in the power steering pump continue to exist?	--	--	System OK