Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Locking Hubs


Removal & Installation

The following procedure covers removal & installation only, for the hub assembly. The hub should be disassembled ONLY if overhaul is necessary. In that event, an overhaul kit will be required. Follow the instructions in the overhaul kit to rebuild the hub.

  1. Before servicing the vehicle, refer to the Precautions section.
  3. Remove or disconnect the following:

    Capscrews and washer from the hub cap
    Hub cap and spring
    Bearing race, bearing and retainer
    Keeper from the outer clutch housing
    Large snapring to release the locking unit
    Locking unit from the hub. You can make this job easier by threading 2 hub cap screws into the outer clutch housing and hold these to pull out the unit.


To install:

  1. Wipe clean all parts and check for wear or damage.
  3. Coat all parts with the same wheel bearing grease you've used on the bearings.
  5. Install or connect the following:

    Locking unit in the hub
    Large snapring, pull outward on the unit to make sure the snapring is fully seated in its groove
    Bearing retainer, bearing and race. Make sure that the bearing is fully pack with grease.

  7. Coat the hub cap O-ring with wheel bearing grease and install the hub cap.

    Cap screws and washers. Tighten the screws to 45 inch lbs. (5 Nm).