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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 461 (Automatic Transmission - 6L50/6L80 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Transmission Replacement (6L50 All Wheel Drive) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: 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 meet the engine.
    2. Fig 1: Right Side Transmission Mounting Bolts
    GM1644591Courtesy of GENERAL MOTORS CORP.
  2. Align the transmission with the engine dowels.
    3. CAUTION: Refer to FASTENER CAUTION .
  3. Install the transmission mounting bolts and tighten to 50 N.m (37 lb ft).
    4. Fig 2: Transmission Vent Hose Retainers
    GM1850371Courtesy of GENERAL MOTORS CORP.
  4. Install the transfer case. Refer to TRANSFER CASE ASSEMBLY REPLACEMENT .
  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 Drivetrain and Front Suspension Frame Replacement for proper frame bolt tightening information.
    11. Fig 3: View Of Body Mounting Bolts
    GM1850365Courtesy of GENERAL MOTORS CORP.
  11. Install the transmission mount assembly. Refer to Transmission Mount Replacement (All Wheel Drive)  or Transmission Mount Replacement (Rear Wheel Drive) .
  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 .
  14. Align the torque converter to flexplate/flywheel orientation marks made during the removal procedure.
    15. Fig 5: Identifying Torque Converter Bolts
    G00669081Courtesy of GENERAL MOTORS CORP.
    NOTE: 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 3 NEW torque converter bolts before fully tightening then tighten to 63 N.m (46 lb ft).
    16. Fig 6: View Of Torque Converter Bolt Close Out Cover
    G00669085Courtesy of GENERAL MOTORS CORP.
  16. Install the transmission close out plug.
  17. Install the starter motor. Refer to STARTER MOTOR REPLACEMENT (LH2) , or STARTER MOTOR REPLACEMENT (LC3) , or STARTER MOTOR REPLACEMENT (LY7 AND LLT)
    18. Fig 7: View of TOC Line To Transmission Retainer Bolt
    G00669089Courtesy of GENERAL MOTORS CORP.
  18. Place NEW O-rings over the transmission fluid cooler pipes.
  19. Install the transmission fluid cooler pipes 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. Install the oxygen sensor wiring harness retainer to the transmission.
    24. Fig 9: View Of Manual Shift Shaft Nut
    GM1827761Courtesy of GENERAL MOTORS CORP.
  24. Install the shift linkage to the transmission.
  25. Install the transmission manual shift shaft nut and tighten to 15 N.m (11 lb ft).
  26. Install the front and rear propeller shaft. Refer to FRONT PROPELLER SHAFT REPLACEMENT and Rear Propeller Shaft Replacement (AWD) or Rear Propeller Shaft Replacement (RWD) .
  27. Install the catalytic converters. Refer to CATALYTIC CONVERTER REPLACEMENT - LEFT SIDE and CATALYTIC CONVERTER REPLACEMENT - RIGHT SIDE .
  28. Install the exhaust system. Refer to Exhaust System Replacement .
  29. Lower the vehicle.
  30. Install the thermostat housing. Refer to ENGINE COOLANT THERMOSTAT HOUSING REPLACEMENT (LY7) , or ENGINE COOLANT THERMOSTAT HOUSING REPLACEMENT (V6) , or ENGINE COOLANT THERMOSTAT HOUSING REPLACEMENT (LC3) , or ENGINE COOLANT THERMOSTAT HOUSING REPLACEMENT (LH2) .
  31. Check the transmission fluid level and fill if necessary. Refer to Transmission Fluid Check .
  32. 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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