GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Avalanche - 4WD 🢒 Suspension 🢒 Rear Suspension 🢒 Rear Axle Upper Control Arm Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the electronic suspension control (ESC) sensor, if equipped. Refer to Electronic Suspension Rear Position Sensor Replacement - Left Side or Electronic Suspension Rear Position Sensor Replacement - Right Side in Electronic Suspension Control (ESC).

    3. Object Number: 516277 Size: SH
  3. Remove the upper control arm retaining nut and bolt from the frame bracket.

    4. Object Number: 516271 Size: SH
  4. Remove the upper control arm retaining nut and bolt from the axle bracket.
  5. Remove the upper control arm.

Installation Procedure
  1. Install the upper control arm.

    2. Object Number: 516271 Size: SH
  2. Install the upper control arm retaining bolt and nut to the axle bracket.

    3. Object Number: 516277 Size: SH
  3. Install the upper control arm retaining bolt to the frame bracket.

    4. 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 nuts unless the suspension is at the curb height position.

  4. Install the upper control arm retaining nut.

    5. Tighten
    Tighten the upper control arm retaining bolts to 105 N·m (77 lb ft).

  5. Connect the (ESC) sensor, if equipped. Refer to Electronic Suspension Rear Position Sensor Replacement - Left Side or Electronic Suspension Rear Position Sensor Replacement - Right Side in Electronic Suspension Control (ESC).
  6. Lower the vehicle.