LEMON Manuals: Even more car manuals for everyone
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 (M35) >> 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. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-2.6L and 3.2L.
  13. Remove the intake air resonator. Refer to Intake Air Resonator Replacement in Engine Controls-2.6L and 3.2L.
  14. Disconnect the engine wiring harness connector at the right shock tower and secure to the engine.
    15. Fig 4: Identifying Engine Wiring Harness Connector
    GM756128Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the engine wiring harness connector (1) from the coolant bypass solenoid.
    16. Fig 5: Identifying Engine Wiring Harness
    GM785776Courtesy of GENERAL MOTORS CORP.
  16. Remove the bolt securing the engine wiring harness ground lead to the right body rail.
  17. Drain the cooling system. Refer to Draining and Filling Cooling System (LA3, LY9) in Engine Cooling.
    18. Fig 6: Identifying Surge Tank Inlet Hose
    GM785753Courtesy of GENERAL MOTORS CORP.
  18. 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
  19. Remove the inlet radiator hose. Refer to Radiator Hose Replacement - Inlet (LA3, LY9) in Engine Cooling.
  20. Remove the outlet radiator hose. Refer to Radiator Hose Replacement - Outlet (LA3, LY9) in Engine Cooling.
    21. Fig 7: Identifying Coolant Bypass Outlet Hose To Coolant Inlet Pipe Hose Clamps
    GM789008Courtesy of GENERAL MOTORS CORP.
  21. 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 .
    22. Fig 8: Identifying Coolant Bypass Inlet Hose To Afterboil Coolant Pump Pipe Hose Clamp
    GM756131Courtesy of GENERAL MOTORS CORP.
  22. 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 .
  23. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure in order to disconnect the following quick connect fittings from the fuel rail:
    24. Fig 9: Locating Fuel Rail Quick Connect Fittings
    GM785815Courtesy of GENERAL MOTORS CORP.
  24. 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.

  25. Disconnect the evaporative emission (EVAP) quick connect fitting (3). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  26. Open the retainer (4) located at the engine control module (ECM) bracket in order to remove the chassis hose/pipes.
    27. Fig 10: Identifying Hose Clamp & Afterboil Coolant Pump
    GM789004Courtesy of GENERAL MOTORS CORP.
  27. 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 .
    28. Fig 11: Identifying Inlet Heater Hose
    GM760782Courtesy of GENERAL MOTORS CORP.
  28. 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 .
  29. 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 .
    30. Fig 12: Identifying A/C Refrigerant Pressure Sensor & Electrical Connector
    GM785777Courtesy of GENERAL MOTORS CORP.
  30. Disconnect the electrical connector (1) from the Air Conditioning (A/C) refrigerant pressure sensor (2).
  31. Disconnect the 2 engine wiring harness connectors from the left body rail connectors.
    32. Fig 13: Identifying Power Steering Return Hose Nut & A/C Compressor Stud
    GM803176Courtesy of GENERAL MOTORS CORP.
  32. Remove the power steering return hose nut and retainer from the A/C compressor stud.
    33. Fig 14: View Of Engine Wiring Harness-To-A/C Pressure Hose Retainer
    GM785766Courtesy of GENERAL MOTORS CORP.
  33. Disconnect the retainer (1) securing the engine wiring harness to the A/C pressure hose and secure to the engine.
    34. Fig 15: Identifying Power Steering Pressure Hose Nut & A/C Compressor Stud
    GM802720Courtesy of GENERAL MOTORS CORP.
  34. Remove the power steering pressure hose nut and retainer from the A/C compressor stud.
  35. Remove the drive belt. Refer to Drive Belt Replacement .
    36. Fig 16: Locating Steering Pump Mounting Bolts
    GM785728Courtesy of GENERAL MOTORS CORP.
  36. Remove the power steering pump mounting bolts (1,2,and 3) ONLY.
  37. Remove the power steering pump from the accessory mounting bracket, and position aside.
    38. Fig 17: Identifying Engine Wiring Harness & Remote Power Steering Fluid Reservoir
    GM785764Courtesy of GENERAL MOTORS CORP.
  38. Disconnect the following from the remote power steering fluid reservoir (1):
    • The vacuum brake booster hose
    • The wiring harness (2)
  39. Disconnect the vacuum brake booster hose from the vacuum source.
    40. Fig 18: Locating Remote Power Steering Fluid Reservoir Mounting Bolts
    GM785730Courtesy of GENERAL MOTORS CORP.
  40. Remove the remote power steering fluid reservoir mounting bolts (1,3) ONLY, and position aside.
    41. Fig 19: Locating A/C Compressor Electrical Connector
    GM785773Courtesy of GENERAL MOTORS CORP.
  41. Disconnect the electrical connector from the A/C compressor.
    42. IMPORTANT: Evacuation of the A/C refrigerant will not be necessary.
  42. Remove the A/C compressor mounting bolts ONLY, and position aside.
  43. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  44. Remove the exhaust system. Refer to Exhaust System Replacement (LA3, LY9) in Engine Exhaust.
  45. 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.
  46. Remove the catalytic converter hanger bracket. Refer to Catalytic Converter Hanger Bracket Replacement in Engine Exhaust.
    47. Fig 20: Identifying EBCM Electrical Connector, EBCM Connector Tab, EBCM, EBCM Connector Position Assurance Retainer
    GM772830Courtesy of GENERAL MOTORS CORP.
  47. Remove the Electronic Brake Control Module (EBCM) connector position assurance retainer (4) from the EBCM electrical connector (1).
  48. Rotate the EBCM connector tab (2) up into the unlocked position.
  49. Disconnect the EBCM electrical connector (1) from the EBCM (3).
  50. If equipped, disconnect the electrical connector from the brake fluid pressure sensor.
    51. Fig 21: Identifying ABS Wiring Harness Electrical Connector At Left & Right Wheel Speed Sensors
    GM750896Courtesy of GENERAL MOTORS CORP.
  51. Disconnect the Antilock Brake System (ABS) wiring harness electrical connectors from the left and right wheel speed sensors.
    52. Fig 22: Identifying ABS Wiring Harness
    GM802031Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Note the routing of the ABS wiring harness.
  52. Remove the ABS wiring harness retainers from the following:
    • The lower control arms
    • The electric cooling fan
    53. Fig 23: Identifying Variable Effort Steering Electrical Connector & ABS Wiring Harness Retainers
    GM818791Courtesy of GENERAL MOTORS CORP.
  53. Remove the ABS wiring harness retainers (2) from the engine frame.
  54. If equipped, disconnect the variable effort steering electrical connector (1) from the power steering gear pigtail.
  55. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  56. Remove the oil filter adapter. Refer to Oil Filter Adapter Replacement .
    57. Fig 24: View Of Right Engine Mount Upper Retaining Nut
    GM816388Courtesy of GENERAL MOTORS CORP.
  57. Remove the right engine mount upper retaining nut.
    58. Fig 25: Locating Upper Engine Mount Retaining Nut
    GM785353Courtesy of GENERAL MOTORS CORP.
  58. Remove the left engine mount upper retaining nut.
    59. Fig 26: Identifying Clutch Retaining Hose Retaining Clip & Clutch Hydraulic Hose
    GM802767Courtesy of GENERAL MOTORS CORP.
  59. Remove the clutch hydraulic hose retaining clip (1) from the clutch slave cylinder.
  60. Pull the clutch hydraulic hose (2) from the clutch slave cylinder.

    It is not necessary to plug the lower hose end or slave cylinder fitting as they are equipped with check valves. Only minimal fluid loss may be experienced.

    61. Fig 27: Identifying Propeller Shaft Coupler
    GM803962Courtesy of GENERAL MOTORS CORP.
  61. Disconnect the propeller shaft coupler (1) from the transmission flange ONLY and secure to the shift reaction arm using mechanics wire. Refer to Propeller Shaft Replacement (Automatic Transmission) or Propeller Shaft Replacement (Manual Transmission) or Propeller Shaft Replacement (CTS-V) in Driveline/Axle.
  62. Support the rear of the transmission using a suitable screw jack.
  63. Remove the transmission support. Refer to Transmission Support Replacement in Frame and Underbody.
    64. Fig 28: Identifying Shift Control Pins
    GM834520Courtesy of GENERAL MOTORS CORP.
  64. Carefully lower the transmission only enough to access the shift control pins.
  65. Remove the shift control pin retaining clips (1).
  66. Remove the retaining pin (5) from the transmission and disconnect the shift reaction arm (4).
  67. Remove the retaining pin (3) from the transmission and disconnect the shift control arm (2).
    68. Fig 29: Removing & Installing Transmission Support Mounting Bolts
    GM785394Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: This will support the transmission while the vehicle is lowered.
  68. Install the transmission support to the vehicle.
  69. Install the outer transmission support mounting bolts. Do not tighten.
  70. Lower the screw jack fully.
  71. Remove the screw jack from under the transmission.
  72. Lower the vehicle.
  73. Using a lift jack support the rear of the transmission.
  74. Remove the outer transmission support mounting bolts.
    75. Fig 30: Removing & Installing Transmission Support
    GM785386Courtesy of GENERAL MOTORS CORP.
  75. Remove the transmission support from the vehicle.
    76. Fig 31: Identifying Engine Lift Devise
    GM861151Courtesy of GENERAL MOTORS CORP.
  76. Install the J 39456  to the engine lift brackets and attach to an engine lift devise. See Special Tools and Equipment .
    77. 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
  77. 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.
  78. Lower the engine/transmission assembly to the floor.
    79. IMPORTANT: The following are on-vehicle procedures, use only the portion of the procedure needed for removal of the component.
  79. Remove the following components from the engine if necessary:
    80. Fig 32: Identifying Bolts Securing Engine Wiring Harness Ground Leads To Left Cylinder Head
    GM785762Courtesy of GENERAL MOTORS CORP.
  80. Remove the 2 bolts (2-4) securing the engine wiring harness ground leads (1-3) to the left cylinder head.
    81. Fig 33: Removing & Installing Bolt Securing Engine Wiring Harness Retainer To Oil Pan
    GM785772Courtesy of GENERAL MOTORS CORP.
  81. Remove the bolt securing the engine wiring harness retainer to the oil pan.
    82. Fig 34: View Of Right Engine Mount Bracket Mounting Bolts
    GM816392Courtesy of GENERAL MOTORS CORP.
  82. Remove the right engine mount retaining bolts and bracket.
    83. Fig 35: View Of Left Engine Mount Bracket Retaining Bolts
    GM785355Courtesy of GENERAL MOTORS CORP.
  83. Remove the left engine mount retaining bolts and bracket.
  84. Disconnect the engine wiring harness retainers.
  85. Disconnect the engine wiring harness connectors from the electrical components.
    86. Fig 36: Identifying Engine Wiring Harness Retaining Clips
    GM785771Courtesy of GENERAL MOTORS CORP.
  86. Disconnect the engine wiring harness retaining clips (1) from the transmission mounting bolts.
    87. IMPORTANT: Note the routing of the engine wiring harness.
  87. Remove the engine wiring harness from the engine.
    88. Fig 37: Removing & Installing Transmission Mounting Bolts
    GM801334Courtesy of GENERAL MOTORS CORP.
  88. Remove the transmission mounting bolts (1,2 and 4).
    89. Fig 38: Removing & Installing Transmission Mounting Bolts
    GM801333Courtesy of GENERAL MOTORS CORP.
  89. Remove the remaining transmission mounting bolts (2-4).
  90. With the aid of an assistant remove the transmission from the engine.
  91. Remove the J 39456  from the engine. See Special Tools and Equipment .
scientia non olet · About LEMON Manuals