This procedure covers the removal and replacement of the front lower control arm on a 2014-2018 Chevrolet Silverado 1500 with 5.3L V8, including disconnection of the ball joint and pivot bolts.

Warnings

Tools required

Parts

• Lower control arm assembly × 1 — ACDelco 22757039 or equivalent
• Ball joint castle nut × 1 — Use OEM specification
• Cotter pin × 1 — Use OEM specification

Preparation

1. Park vehicle on level, solid surface and engage parking brake
2. Place wheel chocks behind rear wheels
3. Loosen front wheel lug nuts 1/4 turn while vehicle is on ground
4. Raise front of vehicle with floor jack at recommended jacking point
5. Install jack stands under frame rails behind lower control arms
6. Remove wheel and tire assembly completely
7. Spray all fasteners to be removed with penetrating oil and allow to soak 10-15 minutes

Procedure

1. 1

   Support the lower control arm
   Position a floor jack under the lower control arm near the ball joint to support the weight of the suspension. Raise jack just enough to contact the control arm with light pressure. This prevents the suspension from dropping suddenly when components are disconnected.
2. 2

   Disconnect sway bar link
   Locate the sway bar link connection at the lower control arm. Hold the link shaft with an Allen key to prevent rotation, then remove the lower sway bar link nut using appropriate socket. Disconnect the sway bar link from the control arm and move it aside.
   ℹ️Some models may require link removal from sway bar instead of control arm depending on clearance.
   Torque spec

   Sway Bar Link76 Nm (56 lb-ft)
3. 3

   Remove ball joint cotter pin and nut
   Locate the lower ball joint where it connects to the steering knuckle. Straighten and remove the cotter pin from the ball joint castle nut using pliers. Using a 22mm socket, remove the ball joint castle nut completely. Do not reuse the old cotter pin.
   Torque spec

   Ball Joint Nut100 Nm (74 lb-ft)
4. 4

   Separate ball joint from knuckle
   Install a ball joint separator tool between the lower control arm and steering knuckle. Tighten the separator to apply pressure, then strike the knuckle boss with a hammer to shock the taper loose. Alternatively, use a pickle fork by driving it between the control arm and knuckle. The ball joint stud should pop free from the knuckle taper.
   ⚠Suspension will drop when ball joint separates. Ensure jack is supporting control arm before separation.
   ℹ️Using a pickle fork may damage the ball joint boot. Only use if replacing the control arm or ball joint.
5. 5

   Mark pivot bolt positions
   Before removing the control arm pivot bolts, mark their positions relative to the frame brackets. This helps with initial alignment during reinstallation. Note the orientation of any eccentric washers or cam bolts if present.
6. 6

   Remove front pivot bolt
   Locate the front control arm pivot bolt at the frame. Using a breaker bar and appropriate socket, remove the front pivot bolt nut while holding the bolt head. Remove the bolt completely and note the position of any washers or bushings.
   Torque spec

   Lower Control Arm Pivot Bolts175 Nm (129 lb-ft)
7. 7

   Remove rear pivot bolt
   Locate the rear control arm pivot bolt at the frame. Using a breaker bar and appropriate socket, remove the rear pivot bolt nut while holding the bolt head. Remove the bolt completely. The control arm should now be free to remove.
   Torque spec

   Lower Control Arm Pivot Bolts175 Nm (129 lb-ft)
8. 8

   Remove lower control arm
   Lower the jack slowly while guiding the control arm. Remove the lower control arm from the vehicle. Inspect the frame mounting points and clean with wire brush. Check ball joint stud taper in knuckle for damage or contamination.
9. 9

   Prepare and install new control arm
   Compare new control arm to old unit to verify correct part. Transfer any required hardware if not included with new control arm. Apply light coating of anti-seize to pivot bolt threads. Position new control arm into frame brackets, aligning with marks made during removal. Insert pivot bolts through frame and control arm but do not tighten yet.
   ℹ️Install pivot bolts finger-tight only at this stage. Final torque must be applied at ride height.
10. 10

    Connect ball joint to knuckle
    Raise the lower control arm with the floor jack to align the ball joint stud with the hole in the steering knuckle. Insert the ball joint stud into the knuckle taper. Clean threads on ball joint stud. Install new castle nut and tighten to specification. Continue tightening only as needed to align the next cotter pin hole.
    ⚠Never loosen castle nut to align cotter pin hole. Only tighten further to next alignment, up to 1/6 turn maximum additional.
    Torque spec

    Ball Joint Nut100 Nm (74 lb-ft)
11. 11

    Install cotter pin
    Insert new cotter pin through castle nut and ball joint stud. Bend the cotter pin ends in opposite directions to secure. Ensure cotter pin is fully seated and cannot back out.
12. 12

    Reconnect sway bar link
    Position sway bar link into the lower control arm mounting location. Install the sway bar link nut. Hold the link shaft with Allen key to prevent rotation, then torque the nut to specification.
    Torque spec

    Sway Bar Link76 Nm (56 lb-ft)
13. 13

    Install wheel and lower to ride height
    Install wheel and tire assembly. Thread lug nuts by hand, then snug in star pattern. Remove jack stands and carefully lower vehicle until full weight is on suspension but wheels are still accessible. Do not lower completely to ground yet.
14. 14

    Torque control arm pivot bolts at ride height
    With vehicle weight on suspension at normal ride height, torque both the front and rear lower control arm pivot bolts to specification. This is critical - torquing with suspension hanging will cause premature bushing failure. Use a torque wrench and verify both bolts reach proper torque.
    ⚠This step is critical. Control arm bushings must be torqued at ride height or they will fail prematurely due to binding.
    Torque spec

    Lower Control Arm Pivot Bolts175 Nm (129 lb-ft)
15. 15

    Final wheel installation
    Lower vehicle completely to ground. Torque wheel lug nuts to specification in a star pattern using torque wrench. Repeat procedure for opposite side if replacing both control arms.
    Torque spec

    Wheel Lug Nuts169 Nm (125 lb-ft)

Reassembly

1. All fasteners must be torqued to specification with proper technique
2. Control arm pivot bolts MUST be torqued at ride height with vehicle weight on suspension
3. New cotter pin must be installed at ball joint - never reuse old cotter pin
4. Ensure sway bar link is properly connected and torqued

Verification

• Verify all fasteners are torqued to specification, especially control arm pivot bolts at ride height
• Check that ball joint castle nut has new cotter pin properly installed and bent
• Bounce front suspension several times and verify no unusual noises or binding
• Test drive at low speed in safe area and verify normal handling and no clunking noises
• Schedule 4-wheel alignment as soon as possible - this repair affects alignment settings
• After 50-100 miles, re-check torque on control arm pivot bolts and wheel lug nuts

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