Locking Rear Axle Does Not Lock
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Locking Rear Axle Does Not Lock
| Checks |
Action |
| Little or no preload on the latching bracket |
Replace the governor assembly and the latching bracket. Refer to Locking Differential Disassemble (8.6, 9.5, 11.5 Inch Axle) or Locking Differential Disassemble (10.5 Inch Axle) and Locking Differential Assemble (8.6, 9.5, 11.5 Inch Axles) or Locking Differential Assemble (10.5 Inch Axle) . |
| Flyweights in the governor assembly are stuck closed |
Replace the governor assembly and the latching bracket. Refer to Locking Differential Disassemble (8.6, 9.5, 11.5 Inch Axle) or Locking Differential Disassemble (10.5 Inch Axle) and Locking Differential Assemble (8.6, 9.5, 11.5 Inch Axles) or Locking Differential Assemble (10.5 Inch Axle) . |
| The drive teeth on the governor or cam gear assembly are broken |
Replace the cam plate, the governor assembly, and the latching bracket. Refer to the following:
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| Broken clutch plates |
Replace the clutch plates and the wave spring. Refer to the following:
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