C 3500 Truck 2WD V8-454 7.4L (1990)
Power Steering Pressure Control Valve: All Technical Service Bulletins
Power Steering - Squawking Noise When Turning
Number:
91-233-3B
Section:
3B
Date:
March 1991
Corp. Bulletin No. 063204
Subject:
POWER STEERING SQUAWK WHEN TURNING
Model and Year:
1988-91 C/K TRUCKS EQUIPPED WITH POWER STEERING
Some 1988-91 C/K trucks equipped with power steering may experience noise from the power steering gear when turning. This noise is usually
described as a squawk and may occur most frequently during left turns.
This condition is caused during machining of the steering valve O-ring groove and O-ring material which was incompatible to the application.
To correct this condition, the steering gear valve assembly should be replaced with a new valve assembly that features improved machining and a revised
valve spool O-ring seal (230). The revised seal is black, while the old seal was orange.
VEHICLES INVOLVED
All 1988-1991 C/K trucks equipped with power steering.
SERVICE PROCEDURE:
Tools Required :
J7624
Adjustable Spanner Wrench
J4245
Snap Ring Pliers
J8524-1
Adjuster Plug Bearing Installer
J7079-2
Driver
J2981 0
Seal Protector
J7754-01
0-25 lbs. in. torque wrench
