You need to remove the axle itself to replace it. It requires you to take apart the differential to some extent.
November, 19, 2011 AT 8:19 PM
HUB/ROTOR & WHEEL BEARINGS
Turn air suspension off (if equipped). Air suspension can be turned off using air suspension switch located in rear jack storage area. Raise and support vehicle. Remove wheel and tire assembly. Remove brake caliper, and wire to underbody. Remove grease cap from hub/rotor. Remove cotter pin, retainer, adjusting nut and washer from spindle. Remove outer wheel bearing. Remove hub/rotor from spindle. Remove grease seal from hub/rotor.
Remove bearing cone and roller from hub/rotor. Clean and inspect inner and outer bearing cups for scratches, pits, excessive wear or damage. If inner or outer bearing cups are worn or damaged, use Front Hub Remover/Replacer (T81P-1104-C) and Bearing Cup Puller (T77F-1102-A) to remove bearing cups