GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Chevy C Silverado - 2WD 🢒 Suspension 🢒 Suspension General Diagnosis 🢒 Upper Control Arm Replacement

Tools Required

J-42188-B Ball Joint Separator

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .

    3. Object Number: 367084 Size: SH
  3. Remove the retaining bolt for the brake hose and the wheel speed sensor brackets.
  4. Remove the nut at the upper ball joint. Discard the nut.

    5. Object Number: 1809906 Size: SH
  5. Disconnect the upper control arm from the steering knuckle using the J-42188-B .

    6. Object Number: 376754 Size: SH
  6. For 15-Series 2WD/4WD and 25/35 Series 2WD, remove the control arm using the following procedure:
    7. 6.1. Remove the upper control arm nuts and the adjustment cams (2).
    6.2. Remove the upper control arm bolts (4).
    6.3. Remove the upper control arm.

    Object Number: 376756 Size: SH
  7. For the 25/35 Series 4WD, remove the control arm using the following procedure:
    8. 7.1. Remove the upper control arm nuts and adjuster cams (2).
    7.2. Remove the upper control arm bolts (4).
    7.3. Remove the upper control arm.

Installation Procedure
  1. Install the upper control arm.

    2. Object Number: 376756 Size: SH
  2. Install the upper control arm bolts (4), the 25/35 Series for the 4WD.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the upper control arm nuts and the adjustment cams (2), the 25/35 Series for the 4WD.

    4. Tighten
    Tighten the nuts to 190 N·m (140 lb ft).

  4. For the 25/35 Series 4WD, install the control arm using the following procedure:
    5. 4.1. Install the upper control arm.
    4.2. Install the upper control arm bolts (4).
    4.3. Install the upper control arm nuts and adjuster cams (2).

    Object Number: 376754 Size: SH
  5. For 15 Series 2WD/4WD and 25/35 Series 2WD, install the control arm using the following procedure:
    6. 5.1. Install the upper control arm.
    5.2. Install the upper control arm bolts (4).
    5.3. Install the upper control arm nuts and the adjustment cams (2).
  6. Connect the upper control arm to the steering knuckle .
  7. Install a new nut to the upper ball joint stud.

    8. Tighten
    Tighten the nut to 50 N·m (37 lb ft).


    Object Number: 367084 Size: SH
  8. Install the retaining bolts for the brake hose and wheel speed sensor brackets.

    9. Tighten
    Tighten the bolts to 9 N·m (80 lb in).

  9. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation .
  10. Remove the safety stands.
  11. Lower the vehicle.
  12. Verify the wheel alignment. Refer to Wheel Alignment Measurement .