GMC 15042155 Wheel Bearing

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To remove the left side of a vehicle, first loosen the wheel lug nuts, raise the vehicle, place it securely on jackstands, and remove the left front wheel. Then, remove the differential carrier splash shield from under the front axle and the left driveaxle. Drain the lubricant from the front differential and pull the left axle shaft out with a slide hammer and adapter. Remove the deflector and seal from the differential and remove the bearing using a slide hammer and bearing remover attachment. To install the left side, first 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. Then, install a new seal and deflector, lubricating the lips of the seal with multi-purpose grease. Carefully drive in the axle shaft with a soft-face hammer and fill the differential with the proper lubricant. Install the driveaxle and differential carrier splash shield, then install the wheel and lug nuts. Lower the vehicle, tighten the lug nuts to the proper torque specifications, and check for proper operation.

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 new bearing can be installed using a bearing installer or a piece of pipe against the outer race.

The hub assembly can be removed from the axle tube by using a special socket to remove the adjusting nut and pulling the hub assembly straight off the axle tube.

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.

After discarding the oil seal, all components should be cleaned and inspected for wear or damage.

After removing the old bearing, the recess should be cleaned out.