GM 15267619
Upper Control Arm, Rear Driver Side

Lift the car up and support it before you take off the tire and wheel. After that, unscrew the brake caliper mounting bracket and take off the shock absorber. Unscrew the upper Ball Joint retaining nut on the knuckle, and bracket out the upper Ball Joint from the upper Control Arm using j 43631. Then, remove all the upper Control Arm nuts and bolts from the frame, and take the whole upper Control Arm out of the vehicle. Put the upper Control Arm into the frame, attach the bolts and nuts, and tighten them to 150 n.m (111 lb ft). Join the upper Ball Joint to the knuckle and screw the nut on until it turns 20 n.m (15 lb ft) plus 210 degrees. Start by installing the brake caliper mounting bracket, continue with the shock absorber, and then put the tire and wheel assembly onto the wheel studs. Afterwards, take off the support and slowly lower the vehicle, then look at the rear wheel alignment.

To replace the upper Control Arm, first, lift and support the vehicle, and the tire and wheel to be removed. Next, pull out the brake caliper with the mounting bracket in place, suspending it with mechanics wire. Next, remove the brake caliper mounting bracket and the shock absorber. Loosen the upper Ball Joint retaining nut off the knuckle, and using the j 43631 (Ball Joint Remover), separate the upper Ball Joint from the upper Control Arm. Go ahead and remove the upper Control Arm nuts and bolts from the frame, and then remove the upper Control Arm. For installation, align the upper Control Arm in the frame and make sure that the mounting bolts and the pins are screwed up to 120nm (88 lb ft). Mount the upper Ball Joint onto the knuckle and bolt it with 20 nm (15 lb ft) plus another 210 degrees turn. Mount the brake caliper mounting bracket and shock absorber and replace the tire and the wheel assembly. Finally, take away the support and drop the vehicle, and then inspect the rear wheel alignment.

To replace the Trailing Arm, one should lift and secure the vehicle, remove the tire and the wheel. Remove the automatic level control link from the upper Control Arm, along with the brake pipe bracket retaining nuts, and finally the brake pipe bracket from the mounting studs. Support the lower Control Arm with an appropriate jack, and remove trailing link to knuckle nut and bolt. Support the frame with a proper jack once the jack is removed, and then take out the front bolts from the frame to lower the front end of the rear frame. Afterwards, take off trailing link to frame nut and bolt, and remove trailing link from vehicle. For installation, place the trailing link back to the vehicle tightly but loosely installed prior to tightening. Place the trailing link to frame bolt and nut and lift the frame using a suitable jack. Use the front bolts to install to theframe and tighten to the extent of 265 nm (195 ft. Lbs.). Take off the jack and hold the lower Control Arm with an adequate jack to align the trailing link and the knuckle. Apply the trailing link to knuckle bolt and nut, tightening the trailing link to frame nut to 150 nm(111 ft. Lbs), and the trailing link to knuckle mounting bolt, 170 nm(125 ft. Lbs). Remove the brake pipe bracket from the mounting studs, while securing nuts into the brake pipe bracket retaining nuts, turn tightening them to 10 nm (89 inch lbs.) before mounting back the automatic level control link to the upper Control Arm. Lastly, attach the tire and wheel back, but before lowering the vehicle.

To replace the Trailing Arm lift up and support the vehicle with the tire and the wheel. Unbolt the automatic level control link from the top Control Arm, brake pipe bracket retaining nuts, and remove the brake pipe bracket from the mounting studs. Support the lower Control Arm with an appropriate jack then unknap nut and bolt the leading link to knuckle. After removing the jack, put the frame on a suitable jack and take out the front bolts of the frame in order to bring down the front of the rear frame. Then, remove the trailing link to the frame nut and bolt and pull the trailing link out of the vehicle. Instead for installation, start by disjointing the loosely installation of the trailing link to the vehicle but also disjointing the trailing link to frame bolt and nut. Lift the frame using a suitable jack and bolt the front bolts to the frame, making sure to tighten (265 N.m [195 lb ft]), it. Take off the jack and support the lower Control Arm using an appropriate jack for the alignment of the trailing link and the knuckle. Mount the trailing link to knuckle bolt and nut, tightening the trailing link to frame nut to 150 n.m (111 lb ft) and the trailing link to knuckle mounting bolt to 170 n.m (125 lb ft). Reinstall the brake pipe mounting bracket onto the mounting studs and fixture with the retaining nuts tightening them with a torque of 10 n.m (89 lb in). Finally, connect the automatic level control link to the upper Control Arm, re-install the tyre and wheel, and bring the vehicle down.

Support the lower control arm with a suitable jack.

Remove the jack and support the lower control arm with a suitable jack for alignment of the trailing link and knuckle.

The air deflector and the stabilizer shaft link from the lower control arm.

Take off the ABS wire harness from the lower control arm.

Install the rear trailing arm mounting bolt and tighten it to 170 Nm (125 lb ft).

Remove and discard the upper control arm to frame mounting nuts and bolts.

Install the trailing arm bolt, ensuring to adhere to the Fastener Notice.

The lower control arm to cradle bolts and nuts.

Raise and support the vehicle.

Remove the front mounting bolts for the rear suspension support, then take out the front mounting nut and bolt for the trailing arm.

Reattach the ABS wire harness, stabilizer shaft link, and the stabilizer shaft link lower retaining nut, tightening it to 110 N.m (81 lb ft).

Support the lower control arm with a suitable jack.

Reattach the ABS wire harness and the stabilizer shaft link to the lower control arm, securing the stabilizer shaft link lower retaining nut to 110 Nm (81 lb ft), then reinstall the air deflector, tire and wheel, lower the vehicle, and check the front end alignment.

Raise and support the vehicle, then remove the tire and wheel.

Remove the ABS wire harness from the lower control arm, ensuring the ball stud does not rotate; use hand tools to prevent rotation.

Remove the trailing link to knuckle nut and bolt.

Remove the trailing link to knuckle nut and bolt.

Remove the trailing link to frame nut and bolt, then take the trailing link out of the vehicle.

The brake pipe bracket.

Tighten the cradle nuts to 135 N.m (96 lb ft).

Install the new upper control arm, ensuring to loosely install all fasteners before tightening.

The lower control arm to frame bolt and nut, then the lower control arm to knuckle bolt.

Loosely install all fasteners before tightening.

120 Nm (89 ft. lbs.).

Remove the trailing link to knuckle nut and bolt.

Tighten them to 135 Nm (96 lb ft).