GM 9439561 Rear Wheel Bearing

For front wheel or wheel bearing looseness in front wheel drive vehicles, torque lug nuts and axle nuts to specification and recheck for looseness. If the wheel bearing is worn or damaged, it should be replaced. If the wheel bearing is out of adjustment, adjust it to specification; if it remains loose, replacement is necessary. For rear wheel or wheel bearing looseness in front wheel drive vehicles, adjust the wheel bearing to specification; if it is still loose, replace it. Additionally, torque lug nuts to specification and recheck for looseness, and replace the wheel bearing if it is worn or damaged.

Remove the axleshaft and the oil seal. A bearing puller which grips the bearing from behind will be required for this job. Attach a slide hammer to the puller and extract the bearing from the axle housing. Clean out the bearing recess and drive in the new bearing with a bearing installer or a piece of pipe positioned against the outer bearing race. Use a special bearing installer, large socket or piece of pipe to tap the bearing into the axle housing. Make sure the bearing is tapped into the full depth of the recess and the numbers on the bearing are visible from the outer end of the axle housing. Install a new oil seal, then install the axle shaft.

To remove and install a rear hub assembly, first remove the axleshaft and rear wheels, then remove the brake disc and retaining ring/key from the end of the axle housing. Use a special socket to remove the adjusting nut and pull the hub assembly straight off the axle tube. Discard the oil seal and clean and inspect all components for wear or damage. Disassemble the hub further if necessary, then clean and reassemble using new bearing cups and lubricating with wheel bearing grease. To install, place the hub assembly on the axle tube and adjust the bearings by tightening the adjusting nut to 50 ft-lbs, then backing it off and tightening it hand-tight. Install the key and retaining ring, and ensure there is no play in the hub assembly before reinstalling the axleshaft and lowering the vehicle.

To remove and replace a bearing in an axle housing, first remove the axleshaft and oil seal. Use a bearing puller and slide hammer to extract the old bearing from the housing. Clean out the recess and install the new bearing using a bearing installer or a piece of pipe against the outer race. Ensure the bearing is tapped in fully. Finally, install a new oil seal and re-install the axleshaft.

Use a screwdriver to pry the seal out of the rear of the hub, remove the inner wheel bearing, and use solvent to clean all traces of old grease from the bearings, hub, and spindle, allowing the parts to air dry.

A bearing puller that grips the bearing from behind is required, typically using a slide hammer and axleshaft bearing remover attachment.

Install the grease-packed inner bearing, a new seal, and the outer bearing, then secure with the washer and spindle nut.

1. Install the bearing with the square shoulder facing in, using a bearing driver or a socket with an outside diameter slightly smaller than that of the bearing. 2. Install a new seal and deflector, lubricating the lips of the seal with multi-purpose grease. 3. Carefully drive in the axle shaft with a soft-face hammer. 4. Fill the differential with the proper lubricant. 5. Install the driveaxle and differential carrier splash shield. 6. Install the wheel and lug nuts. 7. Lower the vehicle. 8. Tighten the lug nuts to the proper torque specifications. 9. 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.

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.

The initial steps are to remove the axleshaft and rear wheels.

1. Loosen the wheel lug nuts. 2. Raise the vehicle. 3. Place it securely on jackstands. 4. Remove the left front wheel. 5. Remove the differential carrier splash shield from under the front axle. 6. Remove the left driveaxle. 7. Drain the lubricant from the front differential. 8. Pull the left axle shaft out with a slide hammer and adapter. 9. Remove the deflector and seal from the differential. 10. Remove the bearing using a slide hammer and bearing remover attachment.

The final step is to install a new oil seal and re-install the axleshaft.

The first step is to remove the axleshaft and oil seal.

Install the bearing with the square shoulder facing in, using a bearing driver or a socket with an outside diameter slightly smaller than that of the bearing.

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.

1. Loosen the wheel lug nuts. 2. Raise the vehicle. 3. Place it securely on jackstands. 4. Remove the left front wheel. 5. Remove the differential carrier splash shield from under the front axle. 6. Remove the left driveaxle. 7. Drain the lubricant from the front differential. 8. Pull the left axle shaft out with a slide hammer and adapter. 9. Remove the deflector and seal from the differential. 10. Remove the bearing using a slide hammer and bearing remover attachment.

The first step is to remove the axleshaft and oil seal.

The initial steps are to remove the axleshaft and rear wheels.

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.

The initial steps are to remove the axleshaft and rear wheels.