GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra - 4WD 🢒 Driveline/Axle 🢒 Rear Drive Axle 🢒 Drive Pinion Housing and/or Seal Replacement

Special Tools
    • J 8092 Universal Driver Handle 3/4 x 10 inch
    • J 8608 Pinion bearing Cup Installer
    • J 24433 Pinion Bearing Installer
    • J 37624 Pinion Bearing Installer
    • J 44414 Pinion Oil Seal Installer

Removal Procedure

    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. Drain the axle lubricant. Refer to Rear Axle Lubricant Replacement.
  3. Remove the rear axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement.
  4. Remove the rear propeller shaft.
    5. • For vehicles equipped with the one piece propeller shaft, refer to One-Piece Propeller Shaft Replacement.
    • For vehicles equipped with the two piece propeller shaft, refer to Two-Piece Propeller Shaft Replacement.
  5. Remove the drive pinion flange/yoke and/or oil seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement.

    6. Object Number: 694822 Size: SH
  6. Using a hydraulic press and an appropriate tool, remove the pinion.

    7. Object Number: 739955 Size: SH
  7. Remove the collapsible spacer.

    8. Object Number: 739944 Size: SH

    Note: When performing the following service procedure, move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.

  8. Using a hammer and a brass drift in the slots provided, remove the outer pinion bearing cup.

    9. Object Number: 739945 Size: SH

    Note: When performing the following service procedure, move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.

  9. Using a hammer and a brass drift in the slots provided, remove the inner pinion bearing cup.

Installation Procedure

    Object Number: 739952 Size: SH
  1. Using the J 37624  (2) and the J 8092  (1), Install the inner pinion bearing cup into the pinion gear bearing retainer.

    2. Object Number: 739946 Size: SH
  2. Using the J 8608  (2) and the J 8092  (1), install the outer pinion bearing cup into the pinion gear bearing retainer.
  3. Apply sealant to surface of the selective shim. Refer to Adhesives, Fluids, Lubricants, and Sealers.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the pinion gear bearing retainer and bolts tighten to 88 N·m (65 lb ft)..
  5. Install the drive pinion flange/yoke and/or oil seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement.
  6. Install the propeller shaft.
    7. • For vehicles equipped with the one piece propeller shaft, refer to One-Piece Propeller Shaft Replacement.
    • For vehicles equipped with the two piece propeller shaft, refer to Two-Piece Propeller Shaft Replacement.
  7. Install the rear axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement.
  8. Fill the axle with axle lubricant. Refer to Rear Axle Lubricant Replacement.
  9. Remove the support and lower the vehicle.