Removal (R-P20/2500-30/3500 & G30/3500)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1990 GMC Suburban, 1990 GMC Pickup, 1990 GMC Cab & Chassis, 1990 Chevrolet Suburban, and 1990 Chevrolet Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Raise and support vehicle. Support lower control arm with floor jack. Remove wheel and tire assembly.
- Remove brake caliper and suspend out of way. Remove cotter pin from upper ball joint stud and loosen nut. Using Ball Joint Separator (J-23742 ), loosen ball joint stud from steering knuckle. See Figure . Remove ball joint separator and ball joint nut. Raise control arm from steering knuckle. Support steering knuckle assembly.
- Loosen upper control arm shaft bushing nuts. Loosen control arm shaft-to-frame nuts and remove alignment shims. Tape shims together and tag location for reassembly.
- Remove control arm shaft-to-frame nuts. 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. Remove bushing nuts and remove upper control arm shaft from control arm.