Sierra 1500 4WD V8-5.3L VIN B HO (2006)
Fluid - Differential: Service and Repair
Rear Differential
Lubricant Level Inspection - Rear Drive Axle (8.6 Inch Axle)
Lubricant Level Inspection - Rear Drive Axle (8.6 Inch Axle)
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Make sure the vehicle is level.
3. Inspect the rear axle for leaks. Repair as necessary.
4. Clean the area around the rear axle fill plug.
5. Remove the rear axle fill plug.
6. Fabricate a dipstick from a pipe cleaner or similar item. Form the pipe cleaner into an "L".
7. Insert the pipe cleaner into the fill plug opening with the stem facing down.
8. Remove the pipe cleaner and measure the distance from the bend in the pipe cleaner to the lubricant level.
The distance between the bend and the lubricant level should be 15 - 40 mm (0.6 - 1.6 inch).
9. If the measurement is greater than 40 mm (1.6 inch), add lubricant until the level is between 15 - 40 mm (0.6 - 1.6 inch) from the bottom edge of
the fill plug hole. Use the proper fluid. Refer to Fluid and Lubricant Recommendations.
10. Install the rear axle fill plug.
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Tighten the rear axle fill plug to 33 Nm (24 ft. lbs.).
Notice: Refer to Fastener Notice in Service Precautions.
11. Lower the vehicle.
Lubricant Level Inspection - Rear Drive Axle (11.5 Inch Axle)
Lubricant Level Inspection - Rear Drive Axle (11.5 Inch Axle)
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Make sure the vehicle is level.
3. Inspect the rear axle for leaks. Repair as necessary.
4. Clean the area around the rear axle fill plug.
5. Remove the rear axle fill plug and the seal.
6. Inspect the lubricant level.
The lubricant level should be between 17 - 21 mm (0.6 - 0.8 inch) below the fill plug opening.
7. If the level is low, add lubricant until the level is between 17 - 21 mm (0.6 - 0.8 inch) below the fill plug opening. Use the proper fluid. Refer to
