GM 84873209 Shaft Assembly, Front Whl Drv Half

Take the axle shaft to a qualified technician to replace the bearing and seal.

Road noise, tire noise from wear or low pressure, and engine or transmission noise.

For coil spring models, detach the links for the electronic suspension control sensors from the trailing arms, detach the track bar from the rear axle, remove the stabilizer bar, and remove the coil springs. Then, disconnect the upper and lower trailing arms from the axle assembly, and lower the jack under the differential to remove the rear axle assembly.

Common symptoms of worn or damaged CV joints include lubricant leaks, a clicking noise during turns, a clunk when accelerating after coasting, and vibration at highway speeds.

For installation, use a new hub nut and lubricate the splines on the stub shaft with multi-purpose grease before reversing the removal steps.

Next, take out the rear wheel speed sensor and drain the differential lubricant, removing the differential cover if necessary, as only the 8.6 inch differential requires this step.

After installing the rear axle assembly, the brakes should be bled, the wheels and lug nuts should be installed, and the vehicle should be lowered. Finally, the lug nuts should be tightened to the proper torque specification.

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.

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.

To check for wear in the CV joints and driveaxle shafts, grasp each axle and rotate it in both directions while holding the CV joint housings, feeling for play indicating worn splines or sloppy CV joints.

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. Unbolt the right driveaxle from the axleshaft flange, supporting it properly. Support the differential carrier with a floor jack and a block of wood. Remove nuts attaching the axle shaft to its support bracket and the bolts securing the axle shaft flange to the differential carrier. Use a brass punch and hammer to separate the axle shaft from the differential case side gear. Remove the inner axle shaft assembly and axle shaft. Replace the inner seal and bearing with a special tool, then apply RTV sealant to the differential sealing surface and install the inner axle shaft housing assembly. Install the axle shaft to the support bracket and align the splines with the differential side gear. Tap the axle shaft with a mallet until the ring (clip) aligns with the groove in the differential case side gear. Install the axle shaft to the inner flange and tighten the bolts. Reinstall the stabilizer link, fill the differential with lubricant, install the differential carrier splash shield, and finally, install the wheel and lug nuts. Lower the vehicle, tighten the lug nuts, and check for proper operation.

The initial steps to remove and install components in the front differential of selectable 4WD systems are as follows: Loosen the wheel lug nuts. Raise the vehicle securely on jackstands. Remove the right front wheel. Remove the differential carrier splash shield if equipped. Drain the lubricant from the front differential. For 4WD systems, unbolt the right driveaxle from the axleshaft flange and support it out of the way. Remove the front axle shift motor and, if applicable, disconnect the front stabilizer link or remove the front shock absorber/coil spring assembly. On 2500/3500 models, remove the front axle bracket bolts and slide the bracket forward for additional clearance. Support the differential carrier with a floor jack and a block of wood.

No, overhauling the differential requires special tools and is not cost-effective for a do-it-yourselfer.

The driveaxle/hub nut (new) and the flange bolts should be tightened to the torque values specifications during installation.

Before removing the rear axle assembly, the following components need to be removed: driveshaft, shock absorbers, vent hose, brake hose, rear brake assemblies, parking brake cables, and rear wheel speed sensors.

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

When diagnosing axle problems, it is important to check for other possible causes such as road or tire noise, and to isolate engine and transmission noises.

For models with a locking differential, you should rotate the differential until the shaft touches the case for access to the C-locks.