GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Propeller Shaft Replacement - Three Piece - Flange Type

Removal Procedure
  1. Block the wheels.
  2. Support the propeller shaft.
  3. Mark the universal joints and slip joints with alignment marks.
  4. Remove the propeller shaft guards, if equipped.

    5. Object Number: 198510 Size: SH
  5. For a four nut yoke flange mounting, remove the propeller shaft.

    6. Object Number: 198506 Size: SH
  6. For a eight nut yoke flange mounting, remove the propeller shaft.
  7. Remove the center bearing assembly from the cross member. Refer to Center Bearing Replacement .

    8. Object Number: 198555 Size: SH
  8. Remove the three-piece propeller shaft with tandem axle mounting.

    9. Object Number: 198601 Size: MH
  9. Remove the propeller shaft with center bearing and full round or end yoke.

Installation Procedure
  1. Install NEW universal joints to propeller shaft. Universal Joint Replacement .
  2. Support the propeller shaft sections in the installed position.

    3. Object Number: 198601 Size: MH
  3. Install the slip yoke and the center bearing assembly to the installed propeller shaft splined end.

    4. Object Number: 198510 Size: SH
  4. Install the front propeller shaft to the yoke flange four nut mounting. Keep the alignment marks together.

    5. Object Number: 198506 Size: SH
  5. Install the front propeller shaft to the yoke flange eight nut mounting. Keep the alignment marks together.

    6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install and tighten the propeller shaft half round end yoke bolts. Refer to Fastener Tightening Specifications .

    7. Tighten
    Tighten the center bearing mounting bolts to 71 N·m (52 lb ft).


    Object Number: 198555 Size: SH
  7. Install the rear propeller shaft to the center bearing universal joint, if equipped. Refer to Center Bearing Replacement .
  8. Install the center bearing assembly to the cross frame. Refer to Center Bearing Replacement .
  9. Install the propeller shaft guards, if equipped.
  10. Lubricate the universal joints and the slip joints. Refer to Fluid and Lubricant Recommendations .
  11. Remove the wheel blocks.