Oldsmobile 25766510 Front Lower Control Arm Assembly

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To remove the control arm, start by loosening the wheel lug nuts and raising the front of the vehicle. Support it securely on jackstands and apply the parking brake. Remove the wheel. If working on a 2000 and later DeVille or a Seville, detach the stabilizer bar link(s) from the control arm(s). Remove the cotter pin and loosen the balljoint stud-to-steering knuckle nut. Use a balljoint separator or strike the steering knuckle boss with a hammer to separate the balljoint from the knuckle. Detach the road sensing suspension position sensor if applicable. Remove the control arm-to-frame fasteners and detach the control arm. Carefully inspect the control arm bushings for wear or damage. To install the control arm, position it in the suspension support and install the fasteners without tightening them completely. Insert the balljoint stud into the steering knuckle boss, tighten the nut, and install a new cotter pin. Install the stabilizer bar-to-control arm bolt, spacer, bushings, and washers if necessary. Connect the road sensing suspension position sensor if applicable. Use a floor jack to raise the outer end of the control arm to simulate normal ride height, then tighten the control arm fasteners. Finally, install the wheel and lower the vehicle, tightening the lug nuts.

For installation, follow the reverse order of removal, ensuring all suspension fasteners are tightened to the specified torque. Before tightening the knuckle-to-control arm bolts, control arm inner pivot bolts, and toe link bolts, raise the outer end of the lower control arm with a floor jack to simulate normal ride height. Additionally, turn the ignition key to the On position and let the Electronic Level Control (ELC) system pressurize for approximately 45 seconds before lowering the vehicle and tightening the lug nuts to the torque specifications.