GM 25766510
Control Arm, Passenger Side

To replace the lower Control Arm of the front suspension, lift and support the vehicle, the tire and wheel and the lastly the stabilizer shaft link. Then, take out the cotter pin and loosen the lower Ball Joint retaining nut from the ball stud, and make sure that the over-extension of the tri-pot joints is avoided, as its internal component separation and failure. Utilise the j43828 Ball Joint separator (J43828) to remove the lower Ball Joint from the Steering Knuckle, after this remove the lower Ball Joint retaining nut and finally the lower control-arm-mounting bolts and nuts that will hold the lower control-arm to the frame. In installation, hook the lower Control Arm to the frame without tightening the Control Arm nuts first. Support vehicle weight with the use of the control arms in order to establish correct trim height prior to installation of the lower bolts, Control Arm and nuts. Mount and tighten the lower Ball Joint and retaining nut to the Steering Knuckle ensuring that it is tightened to 10 nm (89 inch lbs.) and another 180 degrees with at no point being more than two slots away from a cotter pin alignment. Once the cotter pin is in place, install it, reconnect the stabilizer shaft link, tire, and wheel, lower the vehicle, and check the trim height. Finally, adjust the Control Arm bolts in sequence with rear mounting bolt 158 nm 117ft.lbs., and not mounting nut 158 nm 117ft.lbs.

To properly service and repair the front lower Control Arm, first, lift and hold the vehicle, second, uninstall the tire and the wheel, third, uninstall the stabilizer shaft link. Then discard the cotter pin and loosen the honey nut of lower Ball Joint from the pollution, while avoiding over extension of the tri- pot joints that might result in loss of separation of internal components and failure of the joints. Separate the lower Ball Joint from the Steering Knuckle using the j43828 Ball Joint separator (J43828), and remove the lower Control Arm of the Steering Knuckle, followed by the lower Ball Joint retaining nut, the lower Control Arm mounting bolts and nuts, and remove the lower Ball Joint from the frame. For laying, fix the lower Control Arm to the frame but do not tighten the nuts of lower Control Arm takes but first; support the weight of the vehicle with the control arms so as to attain the design trim heights before fitting the lower bolts, the Control Arm, and the nuts. Replace the opposite Ball Joint and nut to the Steering Knuckle and tighten the lower Ball Joint scoring nut to 10 nm (88 in. Lbs.), the two flats to a minimum of 55 nm (41 ft. Lbs.) to align the cotter pin slot and the cotter pin. Replace the stabilizer shaft link, tire, and wheel, lower the vehicle and perform trim height check. Lastly, tighten the Control Arm bolts in the following order: rear mounting bolt 158 nm (117 ft. Lbs) and the front mounting nut 158 nm (117 ft. Lbs).

The front lower Control Arm replacement process begins with vehicle elevation for support followed by tire removal and wheel removal and subsequent removal of the stabilizer shaft link and road sensing suspension link from the lower Control Arm. To begin the installation start by removing both the lower ball joint cotter pin and retaining nut. Begin by using the ball joint separator (J43828) on the lower ball joint-steering knuckle assembly to free up both components. Finally remove the lower Control Arm mounting hardware to fully extract the arm. Begin installation by fitting the lower Control Arm to the frame but do not tighten the Control Arm nuts at first until reaching the design trim height while supporting the vehicle weight through the control arms. Place the lower ball joint stud into the Steering Knuckle before installing the lower ball joint retaining nut. Secure the lower Control Arm bolts and nuts at their proper positions. Tighten the lower ball joint stud nut to 10 nm (88 inch lbs.) before continuing to torque it an additional 150 degrees while keeping additional torque to less than 60 degrees for cotter pin installation. The installation process begins with the cotter pin followed by the road sensing suspension then the stabilizer shaft link and ends with tire and wheel installation. The vehicle needs to go down and then come up again to firm the lower Control Arm nuts to 157 nm (116 ft. Lbs.).

Install the lower control arm bolts and nuts, followed by the wheel bearing/hub, while adhering to the Fastener Notice in Service Precautions.

Connect the adjustment link to the lower control arm and secure it with the adjustment link retaining nut, tightening it to 50 Nm (36 ft. lbs.).

Install the lower control arm bolts and nuts, then install the lower ball joint and retaining nut to the steering knuckle.

First, install the lower control arm to the frame without tightening the control arm nuts to ensure the vehicle design trim heights are achieved.

Proceed to remove the lower control arm mounting bolts and nuts, followed by the lower control arm from the frame.

Attach the lower control arm to the frame without tightening the control arm nuts initially.

First, remove the rear suspension support assembly, the automatic level control height sensor link from the left control arm, the stabilizer shaft link, the wheel bearing/hub, the adjustment link retaining nut, and the adjustment link from the lower control arm.

Tighten the control arm nuts to 106 Nm (78 ft. lbs.), install the tire and wheel, and lower the vehicle.

Reinstall the wheel bearing/hub, the stabilizer shaft link, and the Automatic Level Control height sensor link on the left control arm.

Remove the stabilizer shaft link bolt, stabilizer shaft insulators, and spacer, and if necessary, take out the hub and bearing.

Install the cotter pin, then reinstall the wheel and tire, tightening the wheel nuts to 125 Nm (80 ft. lbs.).

Remove the wheel bearing and hub from the lower control arm.

Install the lower control arm mounting bolts and nuts, followed by the wheel bearing and hub.