Upper Control Arm & Bushings: Removal
- Raise and support vehicle. If frame hoist is used, support lower control arm with adjustable jack stand. Remove wheel and tire assembly. On C10 and G10/20 models (with rubber bushings), remove cotter pin from upper ball joint and loosen nut.
- Remove brake caliper and suspend out of way. Do not hang by brake hose. Using Ball Joint Separator (J-23742 ), loosen ball joint stud from steering knuckle. Remove tool and ball joint nut, then raise control arm to clear steering knuckle.
- Detach nuts and bolts attaching control arm shaft to frame member, then remove control arm from vehicle. Tape shims together and tag for proper location when control arm is reinstalled.
- On C20/30 and G30 models (with steel bushings), loosen upper control arm shaft end nuts before loosening shaft-to-frame attaching nuts. Loosen shaft-to-frame nuts and remove caster and camber shims. Tape shims together and tag for proper location when control arm is reinstalled.
- Detach pivot shaft-to-frame nuts but do not allow control arm to swing too far away from frame. Use a safety chain to retain control arm in close relationship to frame. Detach shaft end nuts and remove shaft from control arm.