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Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Mechanical - 3.2L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Engine Replacement (5L40-E) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the hood. Refer to Hood Replacement in Body Front End.
  2. Remove the wiper motor module. Refer to Wiper Motor Module Replacement (LHD) or Wiper Motor Module Replacement (RHD) in Wipers/Washer Systems.
  3. Remove the fasteners securing the front air inlet panel to the battery tray and cowl.
  4. Remove the front air inlet panel from the vehicle.
  5. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    6. Fig 1: View Of Battery Area Mounts And Connectors
    GM772418Courtesy of GENERAL MOTORS CORP.
  6. Remove the bolt (1) securing the battery negative cable to the side rail.
  7. Disconnect the body harness connector (3) from the battery negative cable and secure to the engine.
    8. Fig 2: View Of Underhood Fuse Box
    GM785724Courtesy of GENERAL MOTORS CORP.
  8. Depress the tabs in order to remove the underhood fuse block cover from the underhood fuse block.
    9. Fig 3: Identifying Battery Positive Cable To Underhood Fuse Block
    GM772415Courtesy of GENERAL MOTORS CORP.
  9. Remove the nut (1) securing the battery positive cable (2) to the underhood fuse block.
  10. Disconnect the battery positive cable from the battery and secure to the engine.
  11. Disconnect the engine wiring harness electrical connector from the underhood fuse block and secure to the engine.
  12. Disconnect the engine wiring harness connector at the right shock tower and secure to the engine.
    13. Fig 4: Identifying Transmission Control Module Retainer & Electrical Connector
    GM796810Courtesy of GENERAL MOTORS CORP.
  13. Unlock the transmission control module electrical connector by pulling the retainer (2) away from the electrical connector (1).
    14. IMPORTANT: Twisting or tilting of the transmission control module electrical connector while disconnecting may result in bent or misaligned electrical terminal pins.
  14. Carefully disconnect the electrical connector (1) from the transmission control module and secure to the engine.
  15. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-2.6L and 3.2L.
  16. Remove the intake air resonator. Refer to Intake Air Resonator Replacement in Engine Controls-2.6L and 3.2L.
    17. Fig 5: Identifying Engine Wiring Harness Connector
    GM756128Courtesy of GENERAL MOTORS CORP.
  17. Disconnect the engine wiring harness connector (1) from the coolant bypass solenoid.
    18. Fig 6: Identifying Engine Wiring Harness
    GM785776Courtesy of GENERAL MOTORS CORP.
  18. Remove the bolt securing the engine wiring harness ground lead to the right body rail.
  19. Drain the cooling system. Refer to Draining and Filling Cooling System (LA3, LY9) in Engine Cooling.
    20. Fig 7: Identifying Surge Tank Inlet Hose
    GM785753Courtesy of GENERAL MOTORS CORP.
  20. Position the J 38185  to the clamps in order to remove the surge tank inlet hose from the following:
    • The radiator
    • The throttle body assembly
  21. Remove the inlet radiator hose. Refer to Radiator Hose Replacement - Inlet (LA3, LY9) in Engine Cooling.
  22. Remove the outlet radiator hose. Refer to Radiator Hose Replacement - Outlet (LA3, LY9) in Engine Cooling.
    23. Fig 8: Identifying Coolant Bypass Outlet Hose To Coolant Inlet Pipe Hose Clamps
    GM789008Courtesy of GENERAL MOTORS CORP.
  23. Position the J 38185  to the clamp (2) in order to remove the coolant bypass outlet hose from the coolant inlet pipe. See Special Tools and Equipment .
    24. Fig 9: Identifying Coolant Bypass Inlet Hose To Afterboil Coolant Pump Pipe Hose Clamp
    GM756131Courtesy of GENERAL MOTORS CORP.
  24. Position the J 38185  to the clamp (1) in order to remove the coolant bypass inlet hose from the afterboil coolant pump pipe. See Special Tools and Equipment .
  25. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure in order to disconnect the following quick connect fittings from the fuel rail:
    26. Fig 10: Locating Fuel Rail Quick Connect Fittings
    GM785815Courtesy of GENERAL MOTORS CORP.
  26. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
    • The return hose/pipe (1)
    • The feed hose/pipe (2)

      Plug the open outlet ports to prevent fuel loss and contamination.

  27. Disconnect the evaporative emission (EVAP) quick connect fitting (3). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  28. Open the retainer (4) located at the engine control module (ECM) bracket in order to remove the chassis hose/pipes.
    29. Fig 11: Identifying Hose Clamp & Afterboil Coolant Pump
    GM789004Courtesy of GENERAL MOTORS CORP.
  29. Position the J 38185  to the clamp (1) in order to remove the outlet heater hose from the afterboil coolant pump (2). See Special Tools and Equipment .
    30. Fig 12: Identifying Inlet Heater Hose
    GM760782Courtesy of GENERAL MOTORS CORP.
  30. Position the J 38185  to the clamp (1) in order to remove the inlet heater hose from the heater core. See Special Tools and Equipment .
  31. Position the J 38185  to the clamp in order to remove the surge tank outlet hose from the surge tank and secure to the engine. See Special Tools and Equipment .
    32. Fig 13: Identifying A/C Refrigerant Pressure Sensor & Electrical Connector
    GM785777Courtesy of GENERAL MOTORS CORP.
  32. Disconnect the electrical connector (1) from the Air Conditioning (A/C) refrigerant pressure sensor (2).
  33. Disconnect the 2 engine wiring harness connectors from the left body rail connectors.
    34. Fig 14: Identifying Power Steering Return Hose Nut & A/C Compressor Stud
    GM803176Courtesy of GENERAL MOTORS CORP.
  34. Remove the power steering return hose nut and retainer from the A/C compressor stud.
    35. Fig 15: View Of Engine Wiring Harness-To-A/C Pressure Hose Retainer
    GM785766Courtesy of GENERAL MOTORS CORP.
  35. Disconnect the retainer (1) securing the engine wiring harness to the A/C pressure hose and secure to the engine.
    36. Fig 16: Identifying Power Steering Pressure Hose Nut & A/C Compressor Stud
    GM802720Courtesy of GENERAL MOTORS CORP.
  36. Remove the power steering pressure hose nut and retainer from the A/C compressor stud.
  37. Remove the drive belt. Refer to Drive Belt Replacement .
    38. Fig 17: Locating Steering Pump Mounting Bolts
    GM785728Courtesy of GENERAL MOTORS CORP.
  38. Remove the power steering pump mounting bolts ONLY.
  39. Remove the power steering pump from the accessory mounting bracket, and position aside.
    40. Fig 18: Identifying Engine Wiring Harness & Remote Power Steering Fluid Reservoir
    GM785764Courtesy of GENERAL MOTORS CORP.
  40. Disconnect the following from the remote power steering fluid reservoir (1):
    • The vacuum brake booster hose
    • The wiring harness (2)
  41. Disconnect the vacuum brake booster hose from the vacuum source.
    42. Fig 19: Locating Remote Power Steering Fluid Reservoir Mounting Bolts
    GM785730Courtesy of GENERAL MOTORS CORP.
  42. Remove the remote power steering fluid reservoir mounting bolts (1,3) ONLY, and position aside.
    43. Fig 20: Locating A/C Compressor Electrical Connector
    GM785773Courtesy of GENERAL MOTORS CORP.
  43. Disconnect the electrical connector from the A/C compressor.
    44. IMPORTANT: Evacuation of the A/C refrigerant will not be necessary.
  44. Remove the A/C compressor mounting bolts ONLY, and position aside.
  45. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  46. Remove the exhaust system. Refer to Exhaust System Replacement (LA3, LY9) in Engine Exhaust.
  47. Remove the left and right catalytic converters. Refer to Catalytic Converter Replacement - Left (LA3, LY9) and Catalytic Converter Replacement - Right (LA3, LY9) in Engine Exhaust.
  48. Remove the catalytic converter hanger bracket. Refer to Catalytic Converter Hanger Bracket Replacement in Engine Exhaust.
    49. Fig 21: Identifying EBCM Electrical Connector, EBCM Connector Tab, EBCM, EBCM Connector Position Assurance Retainer
    GM772830Courtesy of GENERAL MOTORS CORP.
  49. Remove the Electronic Brake Control Module (EBCM) connector position assurance retainer (4) from the EBCM electrical connector (1).
  50. Rotate the EBCM connector tab (2) up into the unlocked position.
  51. Disconnect the EBCM electrical connector (1) from the EBCM (3).
  52. If equipped, disconnect the electrical connector from the brake fluid pressure sensor.
    53. Fig 22: Identifying ABS Wiring Harness Electrical Connector At Left & Right Wheel Speed Sensors
    GM750896Courtesy of GENERAL MOTORS CORP.
  53. Disconnect the Antilock Brake System (ABS) wiring harness electrical connectors from the left and right wheel speed sensors.
    54. Fig 23: Identifying ABS Wiring Harness
    GM802031Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Note the routing of the ABS wiring harness.
  54. Remove the ABS wiring harness retainers from the following:
    • The lower control arms
    • The electric cooling fan
    55. Fig 24: Identifying Variable Effort Steering Electrical Connector & ABS Wiring Harness Retainers
    GM818791Courtesy of GENERAL MOTORS CORP.
  55. Remove the ABS wiring harness retainers (2) from the engine frame.
  56. If equipped, disconnect the variable effort steering electrical connector (1) from the power steering gear pigtail.
  57. Remove the transmission fluid cooler pipes. Refer to Transmission Fluid Cooler Hose/Pipe Replacement (LA3, LY9) in Automatic Transmission-5L40-E.
  58. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  59. Remove the oil filter adapter. Refer to Oil Filter Adapter Replacement .
    60. Fig 25: View Of Right Engine Mount Upper Retaining Nut
    GM816388Courtesy of GENERAL MOTORS CORP.
  60. Remove the right engine mount upper retaining nut.
    61. Fig 26: Locating Upper Engine Mount Retaining Nut
    GM785353Courtesy of GENERAL MOTORS CORP.
  61. Remove the left engine mount upper retaining nut.
    62. Fig 27: Identifying Shift Linkage
    GM785877Courtesy of GENERAL MOTORS CORP.
  62. Remove the transmission manual shift shaft nut.
  63. Disconnect the shift linkage from the transmission.
  64. Place the transmission in neutral by rotating the transmission shift shaft clockwise.
    65. Fig 28: View Of Propeller Shaft Coupler
    GM801931Courtesy of GENERAL MOTORS CORP.
  65. Disconnect the propeller shaft coupler (1) from the transmission flange ONLY. Refer to Propeller Shaft Replacement (Automatic Transmission) or Propeller Shaft Replacement (Manual Transmission) or Propeller Shaft Replacement (CTS-V) in Driveline/Axle.
    66. Fig 29: Securing Front Propeller Shaft To Shift Control Lever With Mechanics Wire
    GM787650Courtesy of GENERAL MOTORS CORP.
  66. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanics wire (2).
    67. Fig 30: Removing & Installing Transmission Mount Nuts
    GM785397Courtesy of GENERAL MOTORS CORP.
  67. Remove the transmission mount nuts.
    68. Fig 31: Removing & Installing Inner Transmission Support Mounting Bolts
    GM785390Courtesy of GENERAL MOTORS CORP.
  68. Remove the inner transmission support mounting bolts.
  69. Lower the vehicle.
  70. Using a lift jack support the rear of the transmission.
    71. Fig 32: Removing & Installing Transmission Support Mounting Bolts
    GM785394Courtesy of GENERAL MOTORS CORP.
  71. Remove the outer transmission support mounting bolts.
    72. Fig 33: Removing & Installing Transmission Support
    GM785386Courtesy of GENERAL MOTORS CORP.
  72. Remove the transmission support from the vehicle.
    73. Fig 34: Attaching To An Engine Lift Devise
    GM861151Courtesy of GENERAL MOTORS CORP.
  73. Install the J 39456  to the engine lift brackets and attach to an engine lift devise. See Special Tools and Equipment .
    74. IMPORTANT: Ensure clearance is maintained between the engine/transmission assembly and the following:
    • The A/C compressor
    • The A/C hoses
    • The brake pipes at the BPMV
    • The coolant bypass valve
    • The electric cooling fans
    • The engine wiring electrical harness
    • The fuel hoses
    • The power steering pump
    • The radiator
    • The remote power steering fluid reservoir
    • The vehicles tunnel
  74. Alternate between the following in order to remove the engine/transmission assembly from the engine compartment:
    • Carefully raise the engine/transmission assembly using the engine lift devise.
    • Lower the lift jack supporting the rear of the transmission enough to clear the vehicles tunnel.
  75. Lower the engine/transmission assembly to the floor.
    76. IMPORTANT: The following are on-vehicle procedures, use only the portion of the procedure needed for removal of the component.
  76. Remove the following components from the engine if necessary:
    77. Fig 35: Identifying Bolts Securing Engine Wiring Harness Ground Leads To Left Cylinder Head
    GM785762Courtesy of GENERAL MOTORS CORP.
  77. Remove the 2 bolts (2-4) securing the engine wiring harness ground leads (1-3) to the left cylinder head.
    78. Fig 36: View Of Right Engine Mount Bracket Mounting Bolts
    GM816392Courtesy of GENERAL MOTORS CORP.
  78. Remove the right engine mount retaining bolts and bracket.
    79. Fig 37: View Of Left Engine Mount Bracket Retaining Bolts
    GM785355Courtesy of GENERAL MOTORS CORP.
  79. Remove the left engine mount retaining bolts and bracket.
  80. Disconnect the engine wiring harness retainers.
  81. Disconnect the engine wiring harness connectors from the electrical components.
    82. Fig 38: Identifying Engine Wiring Harness Retaining Clips
    GM785771Courtesy of GENERAL MOTORS CORP.
  82. Disconnect the engine wiring harness retaining clips (1) from the transmission mounting bolts.
    83. IMPORTANT: Note the routing of the engine wiring harness.
  83. Remove the engine wiring harness from the engine.
    84. Fig 39: Removing & Installing Transmission Close Out Plug
    GM785863Courtesy of GENERAL MOTORS CORP.
  84. Remove the transmission close out plug.
  85. Mark the torque converter to flexplate/flywheel orientation to ensure proper realignment.
    86. Fig 40: Removing & Installing Torque Converter Bolt Close Out Plug
    GM785758Courtesy of GENERAL MOTORS CORP.
  86. Remove the torque converter bolt close out plug from the engine block by pulling outward.
    87. Fig 41: Removing Torque Converter Bolts
    GM785760Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: NEW torque converter bolts will be required each time the torque converter bolts are removed.
  87. Repeat the following steps for all 3 torque converter bolts:
    1. Rotate the crankshaft center bolt in the engine rotational direction, clockwise using the J 42098  , in order to align the torque converter bolts with the access hole in the engine block. See Special Tools and Equipment .
    2. Remove and discard the torque converter bolt. The bolt is self locking and is NOT reusable.
    88. Fig 42: Removing & Installing Lower Transmission Mounting Bolts
    GM785862Courtesy of GENERAL MOTORS CORP.
  88. Remove the 3 lower transmission mounting bolts (1-2).
    89. Fig 43: Removing & Installing Upper Transmission Mounting Bolts
    GM785861Courtesy of GENERAL MOTORS CORP.
  89. Remove the 3 upper transmission mounting bolts (2-3).
  90. Pull the transmission free from the engine dowels (1).
  91. With the aid of an assistant remove the transmission from the engine.
  92. Remove the J 39456  from the engine. See Special Tools and Equipment .
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