Installation Procedure

Fig 1: Aligning Flat Edge Of Bushing Flange To Mark In Control Arm

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Install the lower control arm vertical bushing in the original position in order to maintain the original vehicle ride, handling and road feel.

Align the flat edge of the bushing flange to the mark in the control arm (1). Ensure that the flat edge of the bushing flange is 30 degrees (2) from the centerline of the lower control arm. Ensure that the thin slot in the bushing is facing outboard.
Insert the bushing into the control arm.

Fig 2: Illustrating Proper Installation Of Bushing Tools

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Apply J 23444-A or equivalent high pressure lubricant, to the threads of the J 21474-27 . See Special Tools .

Assemble the following bushing installation tools as shown:
- J 21474-27 1/2 Inch Puller Bolt Thrust Bearing. See Special Tools .
- J 21474 Control Arm Bushing Installer. See Special Tools .
- J 21474-5 Control Arm Bushing Receiver. See Special Tools .
- J 21474-4 1/2 Inch Nut. See Special Tools .
Tighten the J 21474-4 until the bushing is fully seated in the control arm. See Special Tools .
Disassemble the bushing installation tools.
Install the lower control arm. Refer to Lower Control Arm Replacement .