Disassembly Procedure

Service the upper control arm bushing separately from the upper control arm.

1. Remove the upper control arm. Refer to Upper Control Arm Replacement .
2. Remove the bolts/screws and the nuts.
3. Separate the front upper control arm from the upper control arm support.
4. Remove the upper control arm bushing from the upper control arm (2):
   Fig 1: Disassembling Upper Control Arm Bushing

   Courtesy of GENERAL MOTORS CORP.
   1. 4.1. Thread J 21474-19 through J 39930. The 3 tangs on J 39930 should be against the screw hand.
   2. 4.2. Thread J 21474-19 through the inside of the upper control arm bushing. You may need to wiggle J 21474-19 until the tool sides through the bushing.
   3. 4.3. Run the smaller end of J 21474-5 onto J 21474-19, then place the thrust washer (1) on J 21474-19 with the seams facing toward J 21474-5.
   4. 4.4. Install J 39872 around the outside of the bushing in order to avoid metal distortion during removal.
   5. 4.5. Align J 39930 and J 21474-5 properly, then install J 21474-18 on J 21474-19.
   6. 4.6. Tighten J 21474-19 and J 21474-18 until the bushing is pushed all the way out, making a popping noise.