GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Final Drive Carrier/Differential Carrier Install

Final Drive Carrier/Differential Carrier Install for GMC Truck TopKick C-Series (Conventional) C6/C7/C8 2005


    Object Number: 15506 Size: SH
  1. Install the sun gear (121) with the bushing side facing the differential (110).
  2. Install the final drive carrier (100) with the thrust bearing (102) secured on the sun gear side. Turn the unit until the unit meshes with the sun gear and the internal gear teeth.
  3. Install the left thrust washer (117). Install the left differential side gear (118).

    4. Object Number: 762303 Size: SH

    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.

  4. Place the transmission in Park using the manual shaft. Attach the differential housing (110) and four bolts (119). Locate dowels on the final drive carrier Insert these dowels into holes in the differential carrier for proper assembly.

    5. Tighten
    Tighten the bolts using a star pattern to 70-76 N·m (52-56 lb ft).