GM 15815723 Axle Assembly, Rear (3.73 Ratio)

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The differential allows the outer rear wheel to turn at a higher speed than the inner tire when going around a corner.

The next step is to drain the differential lubricant and remove the differential cover.

For leaf spring models, the spring U-bolts should be disconnected, followed by removing the springplates. Then, the jack can be lowered under the differential to remove the rear axle assembly.

The outer ends of the driveaxles have a stub shaft that is splined to the front hub and bearing assembly and locked in place with a large nut.

Before installing the driveaxle, the splines on the stub shaft should be lubricated with multi-purpose grease.

To remove and install components in the front differential for AWD systems, follow these steps:Remove the stabilizer bar link and, if applicable, the front shock absorber.

To remove and install components in the front differential for 4WD systems, follow these steps: Remove the bolts securing the axle tube to the differential carrier and the nuts attaching the tube to its support bracket. Carefully remove the output shaft tube, ensuring no components fall out. Mount the tube in a vise and remove the internal components. Measure and remove the axleshaft bearing using a slide hammer and bearing remover attachment. For installation, install the bearing to the original depth using a bearing driver or socket, then install a new seal and deflector, lubricating the seal lips with grease. Carefully drive in the axleshaft, followed by the internal components. Apply RTV sealant to the tube-to-differential housing mating surface, and install the tube assembly, tightening bolts and nuts to specified torques. Reinstall the driveaxle, front axle shift motor, and fill the differential with lubricant.

If the vehicle has a differential carrier splash shield, it should be removed after removing the driveaxle/hub nut.

The differential allows the outer rear wheel to turn at a higher speed than the inner tire when going around a corner.

To install the semi-floating axle shaft, you should insert the axleshaft into the housing until it engages with the differential side gear, install the C-lock, and insert the pinion shaft. Then, install the cover, fill the differential with lubricant, and install the brake disc or drum.

The outer ends of the driveaxles are equipped with ball-and-cage type CV joints capable of angular but not axial movement.

To install the rear axle assembly, the reverse order of removal should be followed. All suspension and brake fasteners should be tightened to the torque value specifications.