Loosen the rear wheel lug nuts, raise the rear of the vehicle, and support it securely on jackstands placed under the frame, not under the axle. Block the front wheels to prevent the vehicle from rolling off the stands and remove the rear wheels. Position a floor jack under the rear axle differential housing. Disconnect the driveshaft from the rear axle pinion flange and fasten the driveshaft out of the way with rope or wire, ensuring it does not hang unsupported. Disconnect the left and right ABS wheel speed sensors. Detach all brake hoses or lines from the axle housing, then plug them to prevent fluid leakage. Disconnect the parking brake cables from the brake assemblies and detach the vent hose from the axle housing. Disconnect the shock absorbers from the axle brackets. If equipped, remove the stabilizer bar. Remove the nuts from the leaf spring U-bolts. For a 4WD model, lower the jack under the differential and remove the rear axle assembly from under the vehicle. For a 2WD model, unbolt the front ends of the leaf springs, allow them to swing down, then lower the axle and guide it out. Installation is the reverse of removal, ensuring all suspension fasteners are tightened to the specified torque. Bleed the brakes and check the differential lubricant level, adding as necessary.