Chevrolet 15003923 Front Lower Control Arm Assembly

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Support the vehicle securely and remove the wheel.

To install the control arm using the alternative method, raise it into position and install the control arm pivot bolts, washers, and nuts without fully tightening them. Carefully raise the lower control arm with a floor jack until the balljoint stud can be inserted into the hole in the steering knuckle. Install the balljoint stud nut, tighten it to the proper torque, and install a new cotter pin. Install the torsion bar, connect the stabilizer bar, and install the shock absorber. Finally, install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the torque specifications. Tighten the lower control arm pivot bolts to the correct torque specifications and install the splash shield if applicable. Measure the vehicle's ride height on each side and adjust the torsion bar accordingly until the vehicle sits level.

Remove the pivot shaft nuts, bolts, and shims, noting their location.

To remove the control arm on a 2WD model, start by loosening the wheel lug nuts and raising the vehicle on jackstands. Remove the wheel and then the coil spring. Disconnect the lower balljoint and take the control arm to a dealer or properly equipped shop for any necessary replacements of the balljoint and bushings. To install the control arm, reverse the removal steps, making sure to tighten all fasteners to the suitable torque specifications once the vehicle is at normal ride height. For another method of removal, begin by loosening the wheel lug nuts and raising the vehicle on jackstands. Remove the wheel and front splash shield if applicable. Disconnect the shock absorber and stabilizer bar from the lower control arm. Remove the torsion bar and then the lower control arm by detaching the lower balljoint from the steering knuckle. Check the bushings for damage or wear, replacing the control arm if necessary. To install the control arm, raise it into position and install the control arm pivot bolts, washers, and nuts without fully tightening them. Carefully raise the lower control arm with a floor jack until the balljoint stud can be inserted into the hole in the steering knuckle. Install the balljoint stud nut, tighten it to the proper torque, and install a new cotter pin. Install the torsion bar, connect the stabilizer bar, and install the shock absorber. Finally, install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the torque specifications. Tighten the lower control arm pivot bolts to the correct torque specifications and install the splash shield if applicable. Measure the vehicle's ride height on each side and adjust the torsion bar accordingly until the vehicle sits level.

Remove the upper control arm pivot bolts and nuts, and inspect the pivot bolt bushings for wear. Replace if necessary.

To install the control arm using the alternative method, raise it into position and install the control arm pivot bolts, washers, and nuts without fully tightening them. Carefully raise the lower control arm with a floor jack until the balljoint stud can be inserted into the hole in the steering knuckle. Install the balljoint stud nut, tighten it to the proper torque, and install a new cotter pin. Install the torsion bar, connect the stabilizer bar, and install the shock absorber. Finally, install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the torque specifications. Tighten the lower control arm pivot bolts to the correct torque specifications and install the splash shield if applicable. Measure the vehicle's ride height on each side and adjust the torsion bar accordingly until the vehicle sits level.

To install the control arm, reverse the removal steps, making sure to tighten all fasteners to the suitable torque specifications once the vehicle is at normal ride height.

Position a floor jack with a wood block under the lower control arm.