GM 15938628 AXLE

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The hypoid, semi-floating rear axle assembly has a differential that permits the outer rear wheel to turn faster than the inner wheel while rounding corners. Through splining, the axleshafts can accommodate this speed variance with the differential side gears. Locking limited-slip rear axle is optional; such an axle acts as a conventional differential but contains multi-disc clutch packs that help in equalizing wheel rotation under low-traction conditions. A fully independent front axle assembly for the 4WD models consists of a differential and two driveaxles with inner and outer constant velocity (CV) joints. There are other causes which should be checked before thinking about axles: among them road noise, conditions of tires, or engine or transmission noise as they appear similar to axle problems . Thus, when it comes to performing any major overhaul on a differential, one may require special tools and this is not cost effective for do-it-yourselfers due to limitations in repairing procedures' scope-axleshaft-related tasks only like removing, installing, oil seal replacing, bearing replacing or removing of the whole unit for professional repair or replacement.

The inner ends of the driveaxles are equipped with sliding constant velocity (CV) joints, which are capable of both angular and axial motion.

Withdraw the pinion shaft part way, then rotate the differential until the shaft touches the case. Have an assistant push in on the outer flanged end of the axleshaft while you remove the C-lock from the groove in the inner end of the shaft.

After disconnecting the brake components and hoses, you should proceed to remove the brake drums.

To remove the hub cover, you can pry it off using a hammer and chisel. The driveaxle/hub nut should be removed and discarded.

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

DIY work is limited to axleshaft-related tasks such as removal, installation, oil seal replacement, bearing replacement, or unit removal for professional repair or replacement.

If tapping the stub shaft with a hammer doesn't free it from the hub splines, you can push the driveaxle from the hub with a puller.

During the installation of the rear axle assembly, you should tighten the U-joint strap bolts to specific torque values, tighten all suspension fasteners to specific torque values, tighten the brake fasteners to specific torque values, bleed the brakes, install the wheels, and tighten the lug nuts to specific torque values.

Fill the differential with the specified lubricant.