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Home >> Chevrolet >> 2013 >> Corvette Z06 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission - 6L80 - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Transmission Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
Fig 1: Tilting Down Rear Of Driveline
GM321407Courtesy of GENERAL MOTORS COMPANY
WARNING:

Refer to Battery Disconnect Warning .

CAUTION:

Failure to follow the proper removal and installation procedures may result in damage to the engine crankshaft thrust bearing.

CAUTION:

When tilting down the rear of the driveline, observe the clearance between the rear of the engine and the composite dash panel. Do not allow the engine to rest unsupported against the composite dash panel, or vehicle damage may result.

CAUTION:

When lowering and removing the rear of the driveline, observe the clearance between the rear of the transaxle assembly and the underbody to prevent damage.

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) , Battery Negative Cable Disconnection and Connection (LS3) .
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
  4. Remove the intermediate pipe assembly. Refer to Intermediate Pipe Replacement .
    5. Fig 2: View Of Tied Off Muffler Assembly
    GM1713450Courtesy of GENERAL MOTORS COMPANY
  5. Tie off the left hand muffler assembly to the underbody to support the muffler out of the way.
  6. Remove the right hand muffler assembly. Refer to Exhaust Muffler Replacement - Right Side .
  7. Remove the floor panel tunnel reinforcement. Refer to Floor Panel Tunnel Panel Reinforcement Replacement .
    8. Fig 3: Rear Bellhousing Access Plug
    GM71469Courtesy of GENERAL MOTORS COMPANY
  8. Using a flat-bladed screwdriver, remove the rear bellhousing access plug.
    9. NOTE:

    The following step must be performed to assure proper torque converter balance during installation.

  9. Matchmark the transmission flexplate to the transmission torque converter through the access hole in the rear bellhousing.
    10. Fig 4: Engine Flywheel & Flexplate
    GM71465Courtesy of GENERAL MOTORS COMPANY
  10. Turn the engine flywheel through the starter motor opening until one of the flexplate to torque converter bolts lines up with the access hole.
    11. Fig 5: Flywheel Holding Tool
    GM1760254Courtesy of GENERAL MOTORS COMPANY
  11. Install the J-42386-A  flywheel holding tool (1) to the engine flywheel, in order to keep the flywheel from turning.
    12. Fig 6: Flexplate & Torque Converter Bolt
    GM71434Courtesy of GENERAL MOTORS COMPANY
  12. Remove the flexplate to torque converter bolt.
  13. Remove the J-42386-A  flywheel holding tool.
  14. Repeat steps 7-10 to remove the 2 remaining bolts.
    15. Fig 7: Identifying Plug Bolts On Front Of Driveline Support Assembly
    GM1760256Courtesy of GENERAL MOTORS COMPANY
  15. Remove the two plug bolts from the front of driveline support assembly.
    16. CAUTION:

    Refer to Fastener Caution .

    NOTE:
    • The propeller input shaft front bearing positioning bolts are intended to remain torqued to specification and in place UNTIL INSTRUCTED in the installation procedure.
    • Failure to use the minimum length fastener specified will prevent proper retention of the propeller input shaft front bearing during disassembly or installation.
  16. Install two bolts, M10 - 1.5 X 55 mm, or longer, in place of the plug bolts.

    The long bolts are located to maintain the propeller input shaft front bearing in original position during removal and installation.

    Tighten 

    Tighten the propeller input shaft front bearing positioning bolts to 35 (26 lb ft).

    17. Fig 8: View Of Engine Flywheel Housing Access Plug
    GM71455Courtesy of GENERAL MOTORS COMPANY
  17. Using a flat-bladed screwdriver, remove the engine flywheel housing access plug.
    18. Fig 9: View Of Propeller Shaft Hub Clamp Bolt
    GM1760257Courtesy of GENERAL MOTORS COMPANY
  18. Loosen the propeller shaft hub clamp bolt (1).

    Rotate the engine at the flywheel, if necessary for alignment.

    19. Fig 10: View Of Transmission Shift Cable Bracket & Retaining Nuts
    GM1673258Courtesy of GENERAL MOTORS COMPANY
  19. Remove the nuts (3) retaining the transmission shift cable bracket (4) to the transmission.
  20. Disconnect the transmission shift control cable from the transmission shift lever.

    Unsnap to release the cable.

  21. Position the transmission shift cable (1) and bracket aside.
    22. Fig 11: View Of Shock Absorber Mounting To Control Arm
    GM180606Courtesy of GENERAL MOTORS COMPANY
  22. Remove the rear transverse spring. Refer to Rear Transverse Spring Replacement .
  23. Support the lower control arm with a straight jack.
  24. Disconnect the outer tie rod end from the suspension knuckle. Refer to Tie Rod Replacement .
  25. Remove the shock absorber lower mounting bolt.
  26. Disconnect the lower ball joint from the suspension knuckle. Refer to Knuckle Replacement .
  27. Remove the straight jack from the control arm.
  28. Repeat steps 21-25 for the other side of the vehicle.
    29. Fig 12: View Of J 42055 On Transmission
    GM1714135Courtesy of GENERAL MOTORS COMPANY
  29. Assemble the J-42055  drivetrain support fixture.
  30. Install the J-42055  drivetrain support fixture to a transmission jack.
  31. Position and firmly secure the J-42055  drivetrain support fixture (1) with the transmission jack to the transmission.
  32. Disconnect the wiring harness and brake pipe clip retainers from the rear suspension crossmember.
  33. Remove the differential to transmission lower nut.
    34. Fig 13: Locating Transaxle Mounts & Nuts
    GM1710439Courtesy of GENERAL MOTORS COMPANY
  34. Remove the transaxle mount to rear crossmember nuts (3).
    35. Fig 14: View Of Correct Transmission Jack Placement
    GM1714138Courtesy of GENERAL MOTORS COMPANY
  35. Position a transmission jack under the rear suspension crossmember and firmly secure the crossmember to the jack.
  36. Using ONLY HAND TOOLS, remove the rear suspension crossmember retaining nuts.
    37. Fig 15: View Of Rear Suspension Crossmember
    GM180638Courtesy of GENERAL MOTORS COMPANY
  37. With the aid of an assistant, slowly lower the rear suspension crossmember away from the vehicle frame rails and remove the crossmember.
    38. Fig 16: Locating Transaxle Mounts & Nuts
    GM1710439Courtesy of GENERAL MOTORS COMPANY
  38. Remove the transaxle mount bracket to differential nuts (1).
  39. Remove the transaxle mount (2).
  40. Using a pry bar, CAREFULLY release the axle shafts from the differential.
  41. Tie off the axle shafts to the underbody to support the shafts out of the way.

    The LH muffler assembly pipe toward the rear offers a good location to help support the LH axle shaft.

    42. Fig 17: View Of Wiring Harness Retainer
    GM1760260Courtesy of GENERAL MOTORS COMPANY
  42. Release the retainer (1) securing (and positioning) the wiring harness to the L-shaped brackets along the driveline support assembly, then slide the harness up out of the brackets and position out of the way.
    43. Fig 18: Vehicle Speed Sensor (VSS) Electrical Connector
    GM180649Courtesy of GENERAL MOTORS COMPANY
  43. SLOWLY lower the driveline approximately 5 cm (2 in), while simultaneously adjusting the angle of tilt, in order to access the electrical connectors.
  44. Disconnect the vehicle speed sensor (VSS) electrical connector.
    45. Fig 19: Wiring Harness Retainer To Stud At Differential Rear Cover
    GM71409Courtesy of GENERAL MOTORS COMPANY
  45. Disconnect the wiring harness retainer from the stud at the differential rear cover.
  46. Disconnect the wiring harness retainer clip from the top of the differential.
    47. Fig 20: View Of Transmission Harness 20-Way Connector
    GM1673257Courtesy of GENERAL MOTORS COMPANY
  47. Disconnect the transmission harness 20-way connector (3).

    Depress both tabs on the connector and pull straight up; do not pry the connector.

  48. Remove the bolt retaining the transmission wiring harness to the LH side of the transmission case.
    49. Fig 21: View Of Wiring Harness & Top Of Transmission
    GM196198Courtesy of GENERAL MOTORS COMPANY
  49. SLOWLY lower the driveline, while simultaneously adjusting the angle of tilt, and observe the relationship between the top rear of the differential and the lowest part of the rear compartment panel floor (the center storage compartment between the frame rails). The differential should not be lowered more than approximately EVEN with the specified body point of reference.

    The engine positive crankcase ventilation (PCV) pipes which route along the rear of the engine intake manifold will likely contact the dash panel.

  50. Release the wiring harness from the harness retainer along the top of the transmission.
  51. Check to be sure that the wiring harness is free from the driveline being removed.
    52. Fig 22: Upper & Lower Transmission Oil Cooler Lines At Intermediate Lines
    GM1503871Courtesy of GENERAL MOTORS COMPANY
  52. Disconnect the transmission oil cooler rear pipes from the junction fittings at the engine flywheel housing, then cap the pipes and plug the junction fittings to prevent contamination. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .
    53. Fig 23: Removing/Installing Driveline Support Assembly To Engine Flywheel Housing Bolts
    GM196199Courtesy of GENERAL MOTORS COMPANY
  53. Using a block of wood to protect the engine oil pan, place a straight jack under the rear of the engine oil pan to support the engine from stressing the composite dash panel.
  54. Remove the five driveline support assembly to engine flywheel housing bolts.
    55. Fig 24: Repositioning Wiring Harness Bracket
    GM1760261Courtesy of GENERAL MOTORS COMPANY
  55. Carefully bend the wiring harness bracket away from the driveline, toward the driveline tunnel wall in order to make a clear removal path for the driveline.
    56. Fig 25: Separating Driveline From Engine
    GM196200Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The aid of an assistant will be necessary for the remaining steps.

  56. Have an assistant insert a flat bladed screwdriver, or similar tool, between the edge of the driveline support assembly and the engine flywheel housing, then begin to pry the driveline loose from the engine.
    57. Fig 26: View Of Driveline From Engine
    GM1760259Courtesy of GENERAL MOTORS COMPANY
  57. Have an assistant guide the front of the driveline during the removal of the driveline from the vehicle.
  58. SLOWLY lower the driveline, while simultaneously adjusting the angle of tilt and pulling the driveline away from the engine UNTIL the propeller input shaft at the front of the driveline support assembly just clears the engine flywheel housing.
  59. SLOWLY lower the driveline completely out of the vehicle.
    60. Fig 27: View Of Transmission & J 42055
    GM196196Courtesy of GENERAL MOTORS COMPANY
  60. Position the chainfall, or equivalent, of a lift device in a way which will protect the transmission oil cooler rear pipes and the rear exhaust hangers located on the driveline support assembly.
  61. Using the lift device, raise the driveline to relieve the weight from the transmission jack.
  62. Disconnect the J-42055  drivetrain support fixture from the transmission jack ONLY, the J-42055  drivetrain support fixture will provide stability to the driveline components while working on a bench.
  63. Position the driveline on a workbench with the lift device still attached.
  64. Support the driveline support assembly and the differential for additional balance.
  65. Remove the lift device from the driveline.
    66. Fig 28: View Of Transmission Oil Cooler Pipes
    GM1760308Courtesy of GENERAL MOTORS COMPANY
  66. Disconnect the transmission oil cooler rear pipes from the fittings on the transmission, then cap the pipes and plug the transmission fittings to prevent contamination. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .
    67. Fig 29: View Of Transmission, Driveline Support Assembly & Bolts
    GM71442Courtesy of GENERAL MOTORS COMPANY
  67. Remove the transmission to driveline support assembly bolts/studs.
  68. Insert a flat-bladed screwdriver, or similar tool, between the edge of the driveline support assembly and the transmission, then begin to pry the driveline support assembly loose from the transmission.
  69. Slowly slide the driveline support assembly away from the transmission while supporting the transmission torque converter.
  70. Using a strap positioned from side to side, secure the transmission torque converter to the transmission.
    71. Fig 30: View Of Differential To Transmission Bolts & Nuts
    GM71505Courtesy of GENERAL MOTORS COMPANY
  71. Remove the differential to transmission bolts and nuts.
    72. NOTE:

    Use care when separating the differential from the transmission to not damage the transmission output shaft seal in the differential plate.

  72. SLOWLY slide the differential from the transmission.
    73. Fig 31: Differential & Plate
    GM71504Courtesy of GENERAL MOTORS COMPANY
  73. Remove the differential plate from the differential.
  74. Remove the transmission from the J-42055  drivetrain support fixture , if necessary.
  75. Flush and flow test the transmission oil cooler and lines. Refer to Transmission Fluid Cooler Flushing and Flow Test  .
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