Pivot Bushing Replacement

WARNING: This page is about a different car, the 1990 GMC Safari and 1990 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Using a blunt chisel, drive front bushing flare down even with rubber of bushing. Install control arm bushing service set. Set includes Receiver (J-21474-5 ), Nut (J-21474-18 ), Bolt (J-21474-19 ), Spacer (J-22474-23 ) and Spacer (J-23737 ). See Fig 1 .
Press front bushing from control arm. See Fig 1 .

Fig 1: Removing Lower Control Arm Front Bushing
Courtesy of GENERAL MOTORS CORP.

Fig 2: Installing Lower Control Arm Front Bushing
Courtesy of GENERAL MOTORS CORP.
To install front bushing, assemble control arm bushing service set. Use Bolt (J-21474-20 ) and Spacer (J-21474-12 ) with removal components. See Fig 2 .
Installed front bushings must be flared. Install Flaring Die (J-21474-2 ), Installer (J-21474-13 ), Nut (J-21474-18 ), Bolt (J-21474-19 ) and Spacer (J-23737 ). Flaring procedure is similar to "S" Series. See Fig 3 .
Turn nut on flaring component until bushing is flared approximately 45 degrees. Remove bushing flaring die and components.

Fig 3: Flaring Lower Control Arm Front Bushing
Courtesy of GENERAL MOTORS CORP.

Fig 4: Removing Lower Control Arm Rear Bushing
Courtesy of GENERAL MOTORS CORP.
To remove rear pivot shaft bushing, install Receiver (J-21474-5 ), Remover (J-21474-8 ), Spacer (J-21474-12 ), Nut (J-21474-18 ), Bolt (J-21474-19 ). See Fig 4 . Press bushing from bore.
Assemble control arm bushing service set. Set includes Nut (J-21474-18 ), Bolt (J-21474-19 ), Spacer (J-21474-12 ) and Receiver (J-21474-5 ) over new bushing positioned in bore. On Astro and Safari, also install Spacer (J-21474-20 ). Press bushing into position until bottomed against control arm.