GM 15127512
Suspension Crossmember, Rear

Start by lifting the vehicle before supporting it adequately before removing the wheel and tire. Raise the vehicle then support the rear Differential carrier using a utility stand before unbolting the rear Differential carrier mounting bolts which connect it to the Rear Crossmember. Start by removing the rear suspension knuckle and disconnecting the wheel speed sensor harness from both the lower Control Arm and Rear Crossmember. Then remove the rivets which attach the park brake cable to the Rear Crossmember. Start by removing the alc height sensor and link and after that take out the alc ball stud while safely storing the alc wiring harness out of harm's way. Support the Rear Crossmember with a utility jack as you scribe the mounting points between the crossmember and frame until you finish removing bolts from the Rear Crossmember to lower it to the ground. The installation requires removing of the rear stabilizer shaft along with the rear axle upper control arms and rear axle lower control arms and tie rods from the Rear Crossmember assembly. Begin installation by installing the tie rods first then assemble rear axle lower control arms and upper control arms onto the Rear Crossmember. Install the rear stabilizer shaft first and apply enough torque to raise the Rear Crossmember before aligning it with frame scribe marks. Put in the Rear Crossmember mounting bolts that need to be secured at 130 n.m (96 lb ft). The process of installation includes attaching both the alc height sensor and ball stud followed by reinstalling rear Differential carrier mounting bolts then attaching the Parking Brake Cable and connecting the wheel speed sensor harness. After installing the rear suspension knuckle and tire you should inspect the rear camber and toe measurements before adjusting them properly and then lowering the vehicle.

Begin by raising and supporting your vehicle and proceed by taking off both rear tires and wheels. Install a utility stand behind the rear Differential carrier before removing the mounting bolts between the carrier and the Rear Crossmember. The next step requires removal of the rear suspension knuckle followed by elimination of the wheel speed sensor harness connection to the lower Control Arm and Rear Crossmember. Begin by removing the rivets connecting the park brake cable to the Rear Crossmember before extracting the automatic level control (ALC) height sensor and link from the combination of crossmember bar and lower Control Arm. Then secure the alc wiring harness out of the operating area. A utility jack will support the Rear Crossmember before removing its mounting bolts to lower the crossmember down. You must first remove the rear stabilizer shaft followed by the rear axle upper and lower control arms and tie rods from the Rear Crossmember. Start the installation process by putting tie rods onto the crossmember before adding the lower and upper control arms for the rear axle and completing with installation of the rear stabilizer shaft. Use guide pins through rail holes to align the Rear Crossmember before inserting the Rear Crossmember mounting bolts which require 130 n.m (96 lb ft) torque. Mount the alc height sensor to both the crossmember and lower Control Arm followed by the Parking Brake Cable installation to the Rear Crossmember. Reposition the rear suspension knuckle followed by wheel speed sensor harness installation onto the Rear Crossmember and lower Control Arm then reinstall rear tires and wheels on the lowered vehicle. Conduct examination for rear wheel alignment then perform adjustments if needed.

Beginning the process requires suspension of the car with support before extracting the tire followed by the wheel for removal. A utility stand should support the rear carrier while you remove the rear suspension knuckle. Separate the wheel speed sensor harness from the lower Control Arm and Rear Crossmember and detach the four rivets which secure the park brake cable to the Rear Crossmember. After disconnecting the automatic level control (ALC) height sensor and its link from the crossmember bar and lower Control Arm, securely position the alc wiring harness away from the work area. Before removing the Rear Crossmember bolts, use a utility jack to stabilize the crossmember then lower it to the ground. Start by removing the rear stabilizer shaft after removing the rear axle upper and lower control arms and tie rods from the Rear Crossmember. Start your installation process by attaching the tie rods to the crossmember before moving onto the rear axle lower and upper control arms and the rear stabilizer shaft. Utilize guide pins through rail holes to align the raised Rear Crossmember before tightening Rear Crossmember mounting bolts to 130 n.m (96 lb ft). You should install the alc height sensor onto both crossmember and lower Control Arm and attach the Parking Brake Cable to the Rear Crossmember as well as connect the wheel speed sensor harness. After placing the rear suspension knuckle back in position with tire and wheel, lower the vehicle for alignment inspection followed by wheel adjustment as needed.

The first step for crossmember replacement includes lifting the vehicle, supporting it and uninstalling the rear wheels and tires. Mount the rear Differential carrier on a utility stand after which you should remove the Rear Crossmember mounting bolts. Start by removing the rear suspension knuckle before disconnecting the wheel speed sensor harness from both the lower Control Arm and Rear Crossmember. Then unscrew the rivets holding the park brake cable to the Rear Crossmember. Disembark the automatic level control (ALC) height sensor and link from the crossmember bar and lower Control Arm before fastening the alc wiring harness to stay out of reach. Place support underneath the Rear Crossmember using a utility jack before removing Rear Crossmember mounting bolts and finally lowering the crossmember. Take out all components including rear stabilizer shaft and rear axle upper control arms and rear axle lower control arms and tie rods from the Rear Crossmember. Installation starts with tying rods to the crossmember then adding lower controls followed by upper controls. Place the rear stabilizer shaft onto the Rear Crossmember before using guide pins to align the crossmember through the rail holes. Complete installation with Rear Crossmember mounting bolts torqued to 130 nm (96 lb ft). Install the alc height sensor onto the crossmember and lower Control Arm followed by rear Differential carrier mounting bolts. The rear suspension knuckle receives installation after you complete both Parking Brake Cable attachment to the Rear Crossmember and wheel speed sensor harness connection. After reattaching the rear tires and wheels, lower the vehicle and check for wheel alignment issues to perform any required adjustments.

Start by lifting the vehicle before supporting it with tools then eliminate the wheel and tire assembly. The support system involves placing a utility stand under the rear Differential carrier for the removal of all Rear Crossmember mounting bolts. First mark the frame locations of the Rear Crossmember mount before you remove the rear suspension knuckle. First disconnect the wheel speed sensor harness from both the lower Control Arm and the Rear Crossmember. After that remove the rivets connecting the park brake cable to the Rear Crossmember. A utility jack supports the Rear Crossmember while you take out the Rear Crossmember mounting bolts to put the crossmember into position. After removing the rear stabilizer shaft you should proceed to detach the upper and lower rear control arms from the Rear Crossmember before collecting the tie rods from their position on the crossmember. The installation process begins with Tie Rod attachment to the crossmember followed by rear axle control arms installation onto the crossmember then the stabilizer shaft installation completes the process. Position the raised crossmember to match the frame scribe marks before inserting Rear Crossmember bolts which should be torqued between 115-145 n.m (96 lb ft). Fasten the rear Differential carrier mounting bolts while torquing each one to 37 n.m (50 lb ft). First position the Parking Brake Cable onto the Rear Crossmember before you wire up the wheel speed sensor harness to both Rear Crossmember and lower Control Arm and then place the rear suspension knuckle into position. After installation replace the tire and wheel before slowly lowering the vehicle.

Remove the rear differential carrier mounting bolts.

115-145 N.m (96 lb ft).