K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Power Steering Pressure Control Valve: All Technical Service Bulletins
Power Steering - Noise When Turning
GMC NUMBER:
91-3B-75
GROUP:
3B Steering
DATE:
March, 1991
CORPORATE
NUMBER:
063204
SUBJECT:
POWER STEERING SQUAWK WHEN TURNING
MODELS:
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
J29810
Seal Protector
J7754-01
0-25 lbs.in. torque wrench
