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Home >> GMC >> 2013 >> Yukon Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1101 (Automatic Transmission - 6L50/6L80/6L90 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Transmission Replacement (All Wheel Drive) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Ensure clearance is maintained between the transmission and the following:
    • The wiring harness
    • The vent tube
    • The cooler pipes
  1. Using the transmission jack, carefully raise the transmission to the engine.
    2. Fig 1: Identifying Transmission Mounting Bolts
    GM1644591Courtesy of GENERAL MOTORS CORP.
  2. Align the transmission with the engine dowels.
  3. Install the transmission mounting bolts.
    NOTE: Refer to Fastener Notice .

    Tighten:  Tighten the bolts to 50 N.m (37 lb ft).

  4. Install the transfer case. Refer to Transfer Case Assembly Replacement .
    5. Fig 2: View Of Retainers
    GM1850371Courtesy of GENERAL MOTORS CORP.
  5. Remove the support stand from under the engine oil pan.
  6. Using the transmission jack. Lower the engine and transmission assembly only enough to gain access to the vent hose tube.
  7. Install the vent hose (2) to the vent tube.
  8. Position the engine wiring harness to the original location.
  9. Raise the transmission to the installed position.
  10. Install the bolts at the rear of the front frame and properly torque all frame bolts. Refer to Front Frame Replacement (Rear Wheel Drive) or Front Frame Replacement (All Wheel Drive) for proper frame bolt tightening infromation.
    11. Fig 3: View Of Body Mounting Bolts
    GM1850365Courtesy of GENERAL MOTORS CORP.
  11. Install the transmission mount assembly. Refer to Transmission Mount Replacement .
  12. Remove the transmission jack.
    13. Fig 4: View Of Intermediate Shaft Lower Pinch Bolt
    GM907425Courtesy of GENERAL MOTORS CORP.
  13. Connect the intermediate shaft to the power steering gear. Refer to Steering Gear Replacement (with All Wheel Drive) or Steering Gear Replacement (with Rear Wheel Drive) .
  14. Align the torque converter to flexplate/flywheel orientation marks made during the removal procedure.
    15. Fig 5: Identifying Torque Converter Bolts
    GM1979764Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Torque converter bolts are self locking and must be replaced with NEW torque converter bolts every time the bolts are removed.
  15. Complete the following steps for all torque converter bolts (1):
    1. Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt holes in the flexplate/flywheel with the access hole in the engine block.
    2. To aid in alignment of the torque converter to the flexplate/flywheel. Install all NEW torque converter bolts (1) before fully tightening.

      Tighten:  Tighten the bolts to 63 N.m (46 lb ft).

    16. Fig 6: Identifying Transmission Close Out Plug
    GM1983699Courtesy of GENERAL MOTORS CORP.
  16. Install the transmission close out plug (1).
  17. Install the starter motor. Refer to Starter Motor Replacement (LY7) .
    18. Fig 7: Identifying Transmission Fluid Cooler Pipes
    GM1979765Courtesy of GENERAL MOTORS CORP.
  18. Place NEW O-rings over the transmission fluid cooler pipes.
  19. Install the transmission fluid cooler pipes (1) to the transmission. Refer to Transmission Fluid Cooler Pipe Replacement - Rear .
    20. Fig 8: View Of Retainers
    GM1850371Courtesy of GENERAL MOTORS CORP.
  20. Install the transmission vent hose to the retaining clips (6) on the transmission mount assembly.
  21. Install the wiring harness retainers (4) to the transmission.
  22. Connect the transmission wiring harness connector (5) to the transmission by rotating the locking latch clockwise.
    23. Fig 9: View Of Manual Shift Shaft Nut
    GM1827761Courtesy of GENERAL MOTORS CORP.
  23. Install the shift linkage to the transmission.
  24. Install the transmission manual shift shaft nut.

    Tighten:  Tighten the nut to 15 N.m (11 lb ft).

  25. Install the front and rear propeller shafts. Refer to Front Propeller Shaft Replacement and Rear Propeller Shaft Replacement (RWD) or Rear Propeller Shaft Replacement (AWD) .
  26. Install the catalytic converters. Refer to Catalytic Converter Replacement - Left Side and Catalytic Converter Replacement - Right Side .
  27. Install the exhaust system. Refer to Exhaust System Replacement (With LY7 and LLT) or Exhaust System Replacement (With LP1) .
  28. Lower the vehicle.
  29. Check the transmission fluid level and fill if necessary. Refer to Transmission Fluid Check .
  30. Adjust the shift control linkage. Refer to Shift Control Linkage Adjustment (All Wheel Drive)  or Shift Control Linkage Adjustment (Rear Wheel Drive) .
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