1998-99 STEERING
Power Recirculating Ball - Trucks - Except Tracker
MODEL IDENTIFICATION
MODEL IDENTIFICATION - TRUCKS
DESCRIPTION & OPERATION
Steering gear is a variable ratio, recirculating ball-type which acts as a rolling thread between worm shaft and
rack piston. The worm shaft is supported at lower end by a thrust bearing with 2 races. It is supported at upper
end by a bearing assembly in the adjuster plug. Control valves, located inside steering gear housing, direct
power steering fluid to either side of rack piston. See Fig. 1 .
Steering linkage connects steering gear to front wheels through pitman arm. Steering linkage consists of pitman
arm, idler arm, relay rod and tie rods. See Fig. 2 - Fig. 12 . Tie rod ends connect to relay rod by ball studs.
Adjuster tubes between inner and outer tie rod ends are used to adjust toe. Some models have a shock absorber
attached to relay rod.
Two different types of vane-type power steering pumps are used. The Model "P" pump is mounted inside
reservoir. See Fig. 18 . The Model "CB" pump is mounted below reservoir. See Fig. 20 . On both models, vanes
are driven by a rotor and move fluid from intake to pressure cavities of pump ring.
Series (1)
Model
"C"
2WD Pickup, Sierra, Silverado, Suburban, Tahoe & Yukon
"G"
Express, G-Van & Savana
"K"
4WD Pickup, Sierra, Silverado, Suburban, Tahoe, Yukon & AWD Escalade
"L"
AWD Astro & Safari
"M"
2WD Astro & Safari
"P"
Commercial Van (P42) & Motorhome (P32)
"S"
2WD Blazer, Envoy, Jimmy, Pickup & Sonoma
"T"
4WD Blazer, Bravada, Envoy, Jimmy, Pickup & Sonoma
(1) Vehicle series is fifth character of VIN.
1998 Chevrolet S10 Pickup
1998-99 STEERING Power Recirculating Ball - Trucks - Except Tracker
Microsoft
Saturday, September 12, 2009 11:14:37 AM
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© 2005 Mitchell Repair Information Company, LLC.
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Fig. 1: Exploded View Of Power Steering Gear
Courtesy of GENERAL MOTORS CORP.
1998 Chevrolet S10 Pickup
1998-99 STEERING Power Recirculating Ball - Trucks - Except Tracker
Microsoft
Saturday, September