GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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


    Object Number: 181238  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the lower control arm bolts (5), nuts (2) and washers (4) from the rear axle (1).
  3. Remove the lower control arm bolts, nuts and washers from the underbody pan.
  4. Remove the lower control arm (3).

Installation Procedure


    Object Number: 181238  Size: SH
  1. Position and align the lower control arm (3) to the rear axle (1) and the underbody pan
  2. 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.

    Important: Do not tighten the bolts unless the suspension is at the curb height position.

  3. Install the lower control arm bolts (5), washers (4) and nuts (2) to the rear axle (1) from the inboard side out.
  4. Tighten
    Tighten the lower control arm bolts (5) to 118 N·m (87 lb ft).

  5. Remove the adjustable rear axle support.
  6. Lower the vehicle.