GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: If you replace both of the lower control arms, remove and replace one arm at a time in order to prevent the rear axle from rolling or slipping sideways.

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 481842  Size: SH
  3. Support the rear axle (1) with an adjustable lifting device (2).

  4. Object Number: 181238  Size: SH
  5. Remove the bolts (5), the nuts (2) and the washers (4) from the rear axle.
  6. Remove the bolts, the nuts and the washers from the underbody pan.
  7. Remove the lower control arm (3).

Installation Procedure


    Object Number: 181238  Size: SH
  1. Position the lower control arm (3) to the rear axle (1) and the underbody pan
  2. Important: Do not tighten the bolts and screws and the nuts unless the suspension is at the curb height position.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the bolts (5), the nuts (2) and the washers (4) to the rear axle (1) from the inboard side out.
  4. Tighten

        • Tighten the bolts (5) to 108 N·m (74 lb ft).
        • Tighten the nuts (2) to 82 N·m (60 lb ft).
  5. Remove the adjustable rear axle support.
  6. Lower the vehicle.