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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - Off Vehicle >> Intermediate Carrier Assembly and Main Shaft Installation >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Intermediate Carrier Module & Thrust Bearing Assembly
    GM1217961Courtesy of GENERAL MOTORS CORP.
  1. Install the intermediate carrier module (2).
  2. Rotate the intermediate carrier module (2) until the module drops into place.
    3. CAUTION: Installing the thrust bearing incorrectly may cause permanent damage to the transmission.
  3. Align thrust bearing assembly (1) so that the blue stripe on the thrust bearing assembly is facing towards the intermediate carrier module (2).
  4. Install the thrust bearing assembly (1) onto the intermediate carrier module (2).
    5. Fig 2: Identifying J 44587
    GM1217466Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not rotate the transmission from the nose-up position without installing J 44587. Failure to install J 44587 and rotating the transmission will cause clearance issues during assembly and possible damage to the transmission.
  5. Align J 44587:  holder J 44587:  holder (1) with the power takeoff (PTO) access as follows:
    • The tongue of J 44587:  holder is facing toward the PTO access.
    • The bolts holes of J 44587:  holder are aligned with the 2 front bolt holes of the PTO access.
  6. Install J 44587:  holder (1) into the PTO access.
  7. Install 2 bolts (2) into J 44587:  holder (1) and tighten the bolts snugly.
    8. Fig 3: Locating Intermediate Sun Gear, Sun Gear Spacer & Main Shaft
    GM1217462Courtesy of GENERAL MOTORS CORP.
  8. Install the intermediate sun gear (3) and the sun gear spacer (2) onto the main shaft (4).
  9. As a unit, install the main shaft (4), the intermediate sun gear (3), and the sun gear spacer (2) into the intermediate planetary carrier module (5).
  10. Align the output sun gear (1) so that the flat side of the sun gear is facing the sun gear spacer.
  11. Install the output sun gear (1) onto the main shaft (4).
  12. Make sure the output sun gear and sun gear spacer splines are engaged.
    13. Fig 4: Aligning Thrust Bearing Assembly
    GM1217576Courtesy of GENERAL MOTORS CORP.
    CAUTION: Installing the thrust bearing incorrectly may cause permanent damage to the transmission.
  13. Align the thrust bearing assembly (1) so that the blue stripe on the thrust bearing assembly is facing away from the output sun gear (2).
  14. Install the thrust bearing assembly (1) into the output sun gear (2).
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