GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Chevy P42 Commercial Chassis 🢒 Suspension 🢒 Front Suspension 🢒 Lower Control Arm Replacement

Lower Control Arm Replacement Independent

Removal Procedure

For lower control arm and components, refer to

Lower Control Arm and Components (Independent Suspension)


Object Number: 175323 Size: LF
(1)Bumper
(2)Steering Knuckle
(3)Coil Spring
(4)Air Cylinder
(5)Lower Ball Joint Nut
(6)Cotter Pin
(7)Lower Control Arm
(8)Lower Ball Joint
(9)Lower Ball Joint Grease Fitting
(10)Stabilizer Shaft to Lower Control Arm Clamp Nut
(11)Stabilizer Shaft Bushing
(12)Stabilizer Shaft to Lower Control Arm Clamp
(13)Stabilizer Shaft to Lower Control Arm Clamp Bolt
(14)Lower Control Arm Seal Grease Fitting
(15)Lower Control Arm Rear Bushing
(16)Pivot Shaft Seal
(17)Pivot Shaft U-bolts
(18)Lower Control Arm Pivot Shaft
(19)Pivot Shaft Brackets
(20)Pivot Shaft Seal
(21)Lower Control Arm Front Bushing
(22)Lower Control Arm Seal Grease Fitting
(23)Pivot Shaft Bracket Nut
(24)Pivot Shaft Bracket Rivet
(25)Pivot Shaft Bolt
(26)Pivot Shaft Nut
(27)Pivot Shaft
.

Tools Required

    • J 23742 Ball Joint Separator
    • J 23028-A Coil Spring Remover and Installer
  1. Raise the vehicle. Support the vehicle with suitable safety stands.
  2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the caliper. Refer to Brake Caliper Replacement in Disc Brakes.
  4. Remove the coil spring. Refer to Front Coil Springs Replacement . Use a jack in order to support the inboard end of the lower control arm when the control arm is separated from the frame.
  5. Remove the cotter pin. Then, loosen the nut one turn.
  6. Disconnect the lower control arm from the steering knuckle.
    7. 6.1. Install the J 23742 with a large cup end over the upper ball joint nut.
    6.2. Extend the threaded end until the ball joint stud loosens from the steering knuckle.
    6.3. Remove the J 23742 and the nut.

Installation Procedure

For the lower control arm and components, refer to

Lower Control Arm and Components (Independent Suspension)


Object Number: 175323 Size: LF
(1)Bumper
(2)Steering Knuckle
(3)Coil Spring
(4)Air Cylinder
(5)Lower Ball Joint Nut
(6)Cotter Pin
(7)Lower Control Arm
(8)Lower Ball Joint
(9)Lower Ball Joint Grease Fitting
(10)Stabilizer Shaft to Lower Control Arm Clamp Nut
(11)Stabilizer Shaft Bushing
(12)Stabilizer Shaft to Lower Control Arm Clamp
(13)Stabilizer Shaft to Lower Control Arm Clamp Bolt
(14)Lower Control Arm Seal Grease Fitting
(15)Lower Control Arm Rear Bushing
(16)Pivot Shaft Seal
(17)Pivot Shaft U-bolts
(18)Lower Control Arm Pivot Shaft
(19)Pivot Shaft Brackets
(20)Pivot Shaft Seal
(21)Lower Control Arm Front Bushing
(22)Lower Control Arm Seal Grease Fitting
(23)Pivot Shaft Bracket Nut
(24)Pivot Shaft Bracket Rivet
(25)Pivot Shaft Bolt
(26)Pivot Shaft Nut
(27)Pivot Shaft
.

  1. Place the nut onto the stud. Do not tighten.
  2. Install the coil spring. Refer to Front Coil Springs Replacement . This step attaches the lower control arm to the frame.

    3. 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 nut.

    4. Tighten

        • Tighten the nut to 122 N·m (90 lb ft).
        • Tighten the nut if needed to install the cotter pin.

    Important: Maximum torque to align the cotter pin is 175 N·m (130 lb ft).

  4. Install the cotter pin.
  5. Install the caliper. Refer to Brake Caliper Replacement in Disc Brakes.
  6. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  7. Lower the vehicle.
  8. Check the front wheel alignment. Refer to Wheel Alignment Specifications in Wheel Alignment.