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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1585 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion Flange/Yoke and/or Oil Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Observe and mark the positions of all the driveline components, relative to the propeller shaft and the axles, prior to disassembly. These components include the propeller shafts, drive axles, pinion flanges, output shafts, etc. Reassemble all the components in the exact places in which you removed the parts. Follow any specifications, torque values, and any measurements made prior to disassembly.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  3. Remove the rear brake drum, if equipped. Refer to Brake Drum Replacement .
  4. Remove the rear disc brake rotor, if equipped. Refer to Rear Brake Rotor Replacement (JD9) or Rear Brake Rotor Replacement (JH6) or Rear Brake Rotor Replacement (JH7) .
    5. NOTE: The following procedure is for the 10.5 or 11.5 inch axles.
  5. Remove the rear axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement .
    6. NOTE: Reference mark the rear propeller shaft to the rear axle pinion yoke.
  6. Remove the propeller shaft.
    7. Fig 1: Measuring Pinion Rotating Torque
    GM661077Courtesy of GENERAL MOTORS CORP.
    NOTE: Record this measurement for reassembly.
  7. Using an inch-pound torque wrench, measure the rotational torque of the differential ring and pinion gear and related components.
    8. Fig 2: View Of Pinion Shaft & Pinion Yoke Alignment Marks
    GM788905Courtesy of GENERAL MOTORS CORP.
  8. Place an alignment mark between the pinion and the pinion yoke.
    9. Fig 3: Holding Pinion Yoke With Special Tool
    GM661080Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • DO NOT reuse the pinion nut, replace with NEW.
    • For the 11.5 inch axle, use J-34826 socket.
  9. Using the J 8614-01:  holder and remover or the J-34826 socket, remove and discard the pinion the pinion nut.
    10. Fig 4: Holding Pinion Yoke With Special Tool
    GM661074Courtesy of GENERAL MOTORS CORP.
    NOTE: Remove the pinion yoke by turning the J 8614-3 (3) clockwise.
  10. Using the J 8614-2 (2), J 8614-3 (3) and the J 8614-01:  remover (1), remove the pinion yoke.
    11. Fig 5: View Of Pinion Oil Seal
    GM1483208Courtesy of GENERAL MOTORS CORP.
    NOTE: DO NOT damage the axle housing.
  11. Using a suitable tool, remove the pinion oil seal.
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