Hummer 19244836 Differential Case Assembly (W/Side & Pinion Gears) "Enhance Gears"

Disconnect the cable from the negative terminal of the battery, then loosen the front wheel lug nuts, raise the front of the vehicle, and support it securely on jackstands. Remove the under-vehicle splash shield and drain the engine oil and front differential lubricant. Disconnect the front driveshaft from the front differential companion flange, wrapping tape around the bearing caps to prevent them from falling off, and support the driveshaft with wire or rope. Disconnect the ABS wheel speed sensor and free the harness from its retainers, then unbolt the brake hose retainer where it joins the metal line at the frame. Disconnect the stabilizer bar links from the stabilizer bar, remove the upper balljoint pinch bolt, and separate the steering knuckle from the upper control arm, ensuring the knuckle does not fall outward and the brake hose is not strained. Place a floor jack under the lower control arm, unscrew the two shock absorber module-to-frame nuts, lower the jack, and detach the shock module from the frame. Drive the inner CV joint out of the differential or off the intermediate shaft while having an assistant support the steering knuckle and shock absorber module. Use wire or rope to support the inner end of the driveaxle to the frame, as well as the steering knuckle and shock module. Repeat the previous steps on the other side of the vehicle, then remove the steering gear, the intermediate shaft bearing housing, and the intermediate shaft. Remove the differential carrier mounting bolts, separate the differential carrier from the oil pan, and tie it to the frame with wire. Remove the oil pan, place a jack beneath the differential carrier, carefully untie its support wire, position it on the jack, and lower it to the floor. Installation is the reverse of the removal procedure, ensuring all fasteners are tightened to the proper torque values, including the wheel lug nuts, and refill the engine with oil and the front differential with the proper lubricant.

After draining the lubricant, you need to remove the front driveshaft and lower control arm crossmember.

Remove the two carrier-to-frame mounting bolts, using an 18mm combination wrench to prevent the upper nut from turning.

Support the driveshaft with a length of wire or rope to prevent it from hanging.

Remove the under-vehicle splash shield.

To reinstall the front differential, you should reverse the removal steps, tighten all fasteners to the proper torque values, and refill the differential with the correct lubricant.

The differential carrier should be supported with a floor jack during removal.

The shift motor and vent hose should be disconnected from the differential housing.

After removing the wheels, you should drain the lubricant from the differential.

Remove the two carrier-to-frame mounting bolts, using an 18mm combination wrench to prevent the upper nut from turning.

Remove the two carrier-to-frame mounting bolts, using an 18mm combination wrench to prevent the upper nut from turning.

Loosen the wheel lug nuts, raise the vehicle and secure it on jackstands, then remove the wheels.

To remove the differential carrier from under the vehicle, you should lower the jack and guide the carrier out.