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Home >> Chevrolet >> 2009 >> Corvette Base, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Manual Transmission - TREMEC 6-Speed) >> Repair Instructions - On Vehicle >> Transmission Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
Fig 1: Illustrating Tilting Down Rear Of Driveline
GM321407Courtesy of GENERAL MOTORS CORP.
WARNING: Refer to Battery Disconnect Warning .
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.
CAUTION: When tilting down the rear of the driveline, insert a putty knife or similar tool between the shift control bracket on the driveline support assembly and the brake pipe retainer on the driveline tunnel wall to prevent damage.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) or Battery Negative Cable Disconnection and Connection (LS3) .
  2. Remove the console. Refer to Console Replacement .
  3. Remove the instrument panel (I/P) accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement .
  4. Remove the shift control closeout boot. Refer to Shift Control Shift Closeout Boot Replacement .
  5. Remove the shift control assembly. Refer to Shift Control Assembly Replacement .
  6. Remove the left I/P lower insulator panel. Refer to Instrument Panel Insulator Panel Replacement .
    7. Fig 2: View Of Master Cylinder Push Rod To Clutch Pedal
    GM71474Courtesy of GENERAL MOTORS CORP.
  7. Remove the clutch master cylinder pushrod retainer.
  8. Disconnect the clutch master cylinder pushrod from the clutch pedal.
  9. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
    10. Fig 3: View Of Clutch Hose, Retaining Clip & Master Cylinder Connection
    GM1710246Courtesy of GENERAL MOTORS CORP.
  10. Remove the clutch actuator cylinder hose (3) from the hose retaining clip below the power brake booster.
  11. Remove the hose retaining clip (1) then separate the hoses (2, 3).
    12. Fig 4: View Of Tied Off Muffler Assembly
    GM1713450Courtesy of GENERAL MOTORS CORP.
  12. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
  13. Remove the intermediate pipe. Refer to Intermediate Pipe Replacement .
  14. Tie off the muffler assemblies to the underbody to support out of the way.
  15. Remove the floor panel tunnel reinforcement. Refer to Floor Panel Tunnel Panel Reinforcement Replacement .
    16. Fig 5: View Of Shock Absorber Mounting To Control Arm
    GM180606Courtesy of GENERAL MOTORS CORP.
  16. Install J 33432-A transverse spring compressor. Refer to Rear Transverse Spring Replacement .
  17. Compress the rear traverse spring.
  18. Disconnect the outer tie rod end from the suspension knuckle. Refer to Tie Rod Replacement (Inner) .
  19. Remove the shock absorber lower mounting bolt.
  20. Disconnect the lower ball joint from the suspension knuckle. Refer to Knuckle Replacement .
  21. Remove the straight jack from the control arm.
  22. Repeat steps 16 through 21 for the other side of the vehicle.
    23. Fig 6: View Of Special Tool J 42055
    GM180608Courtesy of GENERAL MOTORS CORP.
  23. Assemble the J 42055  .
  24. Install the J 42055  to a transmission jack.
  25. Position and firmly secure the J 42055  with the transmission jack to the transmission.
  26. Disconnect the wiring harness and brake pipe clip retainers from the rear suspension crossmember.
  27. Remove the differential to transmission lower nut.

    (Removing the nut at this time will aid in separating the differential from the transmission after the driveline has been removed from the vehicle.)

    28. Fig 7: View Of Transaxle Mounts & Nuts
    GM1710441Courtesy of GENERAL MOTORS CORP.
  28. Remove the transaxle mount (2) to rear crossmember nuts (3).
    29. Fig 8: View Of Correct Transmission Jack Placement
    GM1714138Courtesy of GENERAL MOTORS CORP.
  29. Position a transmission jack under the rear suspension crossmember and firmly secure the crossmember to the jack.
  30. Using ONLY HAND TOOLS, remove the rear suspension crossmember retaining nuts.
    31. Fig 9: View Of Rear Suspension Crossmember
    GM180638Courtesy of GENERAL MOTORS CORP.
  31. With the aid of an assistant, slowly lower the rear suspension crossmember away from the vehicle frame rails and remove the crossmember.
    32. Fig 10: View Of Transaxle Mounts & Nuts
    GM1710441Courtesy of GENERAL MOTORS CORP.
  32. Remove the transaxle mount (2) to differential nuts (1).
    33. Fig 11: View Of Wheel Drive Shaft
    GM1714139Courtesy of GENERAL MOTORS CORP.
  33. Using a pry bar, CAREFULLY release the axle shafts from the differential.
  34. Tie off the axle shafts to the underbody to support out of the way.

    The muffler assembly pipes toward the rear offer a good location to help support the axle shafts.

    35. Fig 12: View Of Wiring Harness & L-Shaped Brackets At Driveline Support Assembly
    GM321406Courtesy of GENERAL MOTORS CORP.
  35. 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.
    36. Fig 13: View Of Vehicle Speed Sensor (VSS) Electrical Connector
    GM180649Courtesy of GENERAL MOTORS CORP.
  36. SLOWLY lower the driveline approximately 5 cm (2 in), while simultaneously adjusting the angle of tilt, in order to access the electrical connectors.
  37. Disconnect the vehicle speed sensor (VSS) electrical connector.
    38. Fig 14: View Of Wiring Harness Retainer To Stud At Differential Rear Cover
    GM71409Courtesy of GENERAL MOTORS CORP.
  38. Disconnect the wiring harness retainer from the stud at the differential rear cover.
  39. Disconnect the wiring harness retainer clip from the top of the differential.
    40. Fig 15: Identifying Backup Lamp Switch Electrical Connector
    GM180651Courtesy of GENERAL MOTORS CORP.
  40. Disconnect the backup lamp switch electrical connector.
    41. Fig 16: Identifying Reverse Lockout Solenoid Electrical Connector
    GM180652Courtesy of GENERAL MOTORS CORP.
  41. Disconnect the reverse lockout solenoid electrical connector.
    42. Fig 17: Identifying Gear Select (Skip Shift) Solenoid Electrical Connector
    GM180654Courtesy of GENERAL MOTORS CORP.
  42. Disconnect the gear select (skip shift) solenoid electrical connector.
    43. Fig 18: Identifying Transmission Fluid Temperature Sensor Electrical Connector
    GM315711Courtesy of GENERAL MOTORS CORP.
  43. Disconnect the transmission fluid temperature sensor electrical connector, if equipped.
    44. Fig 19: Identifying Edge Of Shifter Bracket On Side Of Driveline Support Assembly & Brake Pipe Retainer
    GM180656Courtesy of GENERAL MOTORS CORP.
  44. Insert a putty knife, or similar tool, between the edge of the shifter bracket on the side of the driveline support assembly and the brake pipe retainer on the wall of the driveline tunnel.
    45. Fig 20: View Of Wiring Harness To Harness Retainer At Top Of Transmission
    GM180740Courtesy of GENERAL MOTORS CORP.
  45. 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.

  46. Release the wiring harness from the harness retainer along the top of the transmission.
  47. Check to be sure that the wiring harness is free from the driveline being removed.
    48. Fig 21: Locating Driveline Support Assembly To Engine Flywheel Housing Bolts
    GM180741Courtesy of GENERAL MOTORS CORP.
  48. 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.
  49. Remove the five driveline support assembly to engine flywheel housing bolts.
  50. 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.
    51. Fig 22: Separating Edge Of Driveline Support Assembly & Engine Flywheel Housing Using Flat Bladed Tool
    GM180742Courtesy of GENERAL MOTORS CORP.
    NOTE: The aid of an assistant will be necessary for the remaining steps.
  51. 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.
    52. Fig 23: View Of Propeller Input Shaft At Rear Of Engine Flywheel Housing
    GM71467Courtesy of GENERAL MOTORS CORP.
  52. Have an assistant guide the front of the driveline during the removal of the driveline from the vehicle.
  53. 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.
  54. SLOWLY lower the driveline completely out of the vehicle.
    55. Fig 24: View Of Special Tool J 42055 & Transmission Jack
    GM180744Courtesy of GENERAL MOTORS CORP.
  55. Position the chainfall, or equivalent, of a lift device in a way which will protect the rear exhaust hangers located on the driveline support assembly.
  56. Using the lift device, raise the driveline to relieve the weight from the transmission jack.
  57. Disconnect the J 42055  from the transmission jack ONLY; the J 42055  will provide stability to the driveline components while working on a bench.
  58. Position the driveline on a workbench with the lift device still attached.
  59. Support the driveline support assembly and the differential for additional balance.
  60. Remove the lift device from the driveline.
    61. Fig 25: Identifying Driveline Support Assembly, Bolts & Studs
    GM71538Courtesy of GENERAL MOTORS CORP.
  61. Remove the transmission to driveline support assembly bolts/studs.
  62. 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.
    63. Fig 26: View Of Driveline Support Assembly To Transmission Shift Rod
    GM71537Courtesy of GENERAL MOTORS CORP.
  63. Slowly slide the driveline support assembly away from the transmission while guiding the transmission shift rod through the opening in the driveline support assembly.
    64. Fig 27: View Of Roll Pin, Transmission Shift Rod & Transmission Shift Shaft
    GM71536Courtesy of GENERAL MOTORS CORP.
  64. Using a drift or punch, remove the roll pin (1) retaining the transmission shift rod to the transmission shift shaft.
  65. Remove the transmission shift rod.
    66. Fig 28: View Of Differential, Transmission Bolts & Nuts
    GM71507Courtesy of GENERAL MOTORS CORP.
  66. Remove the differential to transmission bolts and nuts.
  67. SLOWLY slide the differential from the transmission.
  68. Remove the transmission from the J 42055  , if necessary.
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