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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Mechanical - 4.4L (2 Of 5)) >> On-Vehicle Repair Instructions (Part 2) >> Engine Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Install J 42640  to the steering column.
    2. Fig 1: Engine Compartment Sight Shields
    GM1613984Courtesy of GENERAL MOTORS CORP.
  2. Remove the engine compartment sight shields. Refer to Front Compartment Sight Shields Replacement .
  3. Disconnect the positive and negative battery cables from the battery. Refer to Battery Negative Cable Disconnection and Connection and Battery Positive Cable Replacement (LC3) .
  4. Remove the cross vehicle brace. Refer to Cross Vehicle Brace Replacement (DX) .
  5. Remove the fuel injector sight shield. Refer to Intake Manifold Sight Shield Replacement .
    6. Fig 2: Air Cleaner Housing Assembly
    GM1614072Courtesy of GENERAL MOTORS CORP.
  6. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  7. Remove the supercharger inlet duct assemblies. Refer to Supercharger Inlet Duct Assembly Replacement .
  8. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (GE 47719) .
  9. Drain the charge air cooling system. Refer to Charge Air Cooling System Draining and Filling (Static Fill) or Charge Air Cooling System Draining and Filling (Vac N Fill) .
  10. Disconnect the surge tank inlet hose from the fittings on the water outlet housing.
  11. Disconnect the inlet hose from the radiator and position the hose to the vehicle.
    12. Fig 3: View Of Suction Hose Retaining Feature
    GM840242Courtesy of GENERAL MOTORS CORP.
  12. Evacuate the air conditioning system. Refer to Refrigerant Recovery and Recharging .
  13. Remove the air conditioning liquid line from the vehicle.
  14. Disconnect the air conditioning suction hose from the evaporator core.
  15. Remove the suction hose from the retaining feature (1) on the left shock tower and position the hose to the engine.
    16. Fig 4: Removing & Installing Master Cylinder
    GM420706Courtesy of GENERAL MOTORS CORP.
  16. Disconnect the brake fluid level switch electrical connector on the master cylinder.
  17. Remove the master cylinder mounting nuts.
  18. Position the master cylinder to the engine. Hold the master cylinder in place with mechanics wire. Do not disconnect the brake lines from the master cylinder.
    19. Fig 5: Fuel Line Fitting
    GM1614622Courtesy of GENERAL MOTORS CORP.
  19. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  20. Disconnect the fuel line (4) from the fuel rail and position the line to the vehicle. Refer to Metal Collar Quick Connect Fitting Service .
  21. Disconnect the charge air cooler reservoir hose from the reservoir. Position the hose and the charge air cooler fill port to the engine.
  22. Disconnect the engine wiring harness connector C102 at the front of dash. Refer to Harness Routing Views .
  23. Disconnect the underhood fuse block connector C5 located between the right shock tower and the cam cover. Refer to Harness Routing Views .
  24. Remove the underhood electrical center cover.
    25. Fig 6: Instrument Panel (I/P) Harness Electrical Connector
    GM1484712Courtesy of GENERAL MOTORS CORP.
  25. Disconnect the battery current sensor electrical connector. Refer to Battery Current Sensor Replacement .
  26. Remove the negative battery cable bolt from the right shock tower. Remove the cable retainer from the stud on the right shock tower and position the cable to the engine.
  27. Remove the positive battery cable nut from inside the underhood electrical center. Remove the cable from the electrical center and position the cable to the engine.
  28. Disconnect both of the chassis electrical connectors at the top of the right shock tower. Position the wires to the engine.
  29. Disconnect the engine wire harness C5 connector from inside of the underhood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement .
  30. Remove the engine cooling fans.
    31. Fig 7: View Of Tire/Wheel Assembly, Hub Assembly & Wheel Nuts
    GM656803Courtesy of GENERAL MOTORS CORP.
  31. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  32. Remove the front tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
  33. Remove the right and left wheelhouse splash shields. Refer to Engine Splash Shield Replacement .
  34. Remove the right and left wheelhouse liners. Refer to Front Wheelhouse Liner Replacement .
    35. Fig 8: View Of Steering Column Intermediate Shafts
    GM1198603Courtesy of GENERAL MOTORS CORP.
  35. Working through the right wheelhouse opening, remove the windshield washer reservoir brace from the frame and disconnect the chassis wire harness electrical connector. Refer to Harness Routing Views .
  36. Working through the left wheelhouse opening, disconnect the transmission oil cooler lines located near the air conditioning compressor.
  37. Remove the bolt (3) that secures the center intermediate shaft to the lower intermediate shaft.
  38. Separate the 2 shafts.
  39. Remove the bolts securing the power steering cooler lines to the radiator assembly.
  40. Remove the supercharger charge air cooler radiator. Refer to Charge Air Cooler Radiator Replacement .
  41. Remove the radiator, condenser, and transmission oil cooler as an assembly. Refer to Radiator Replacement (LC3) and Condenser Replacement (LC3) .
  42. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  43. Remove the bolts from the mounting bracket on the power steering oil cooler. Position the oil cooler to the engine. Secure the cooler to the engine with mechanics wire.
  44. Disconnect the top heater hose from the water outlet housing and position the hose to the vehicle.
    45. Fig 9: Identifying Transmission Mounting Bolts
    GM1644591Courtesy of GENERAL MOTORS CORP.
  45. Remove the transmission assembly. Refer to Transmission Replacement .
  46. Remove the brake bundle clips from the front frame rails. Do not remove the lines from the clips.
  47. Disconnect the fuel feed line from the fuel filter. Refer to Fuel Filter Replacement .
  48. Disconnect the evaporative emission (EVAP) hose connection from the rear of the fuel filter. Refer to Plastic Collar Quick Connect Fitting Service .
  49. Disconnect the rear brake lines from the bracket above the rear axle assembly on the right side of the vehicle. Refer to Brake Pipe Replacement .
  50. Remove the fuel and brake line bundle retainers from the frame rail along the length of the vehicle. Do not remove the retainers from the lines. Refer to Fuel Hose/Pipes Replacement - Chassis .
  51. Remove the fuel and brake line bundle bracket from the right side wheelhouse.
  52. Lower the vehicle.
    53. Fig 10: View Of Shock Module
    GM1209263Courtesy of GENERAL MOTORS CORP.
  53. Disconnect the outlet hose from the heater outlet pipe at the right frame rail. Position the hose to the engine.
  54. Disconnect the inlet hose from the water housing and position the hose to the vehicle.
  55. If the vehicle is equipped with Magnaride, disconnect the electrical connectors from the top of the right and left shock modules.
  56. Remove the upper mounting bolts from the right and left shock module.
  57. Secure the shock modules to the front frame with mechanics wire to avoid stretching the front brake hoses.
    58. Fig 11: Identifying Frame Mounting Bolts
    GM822362Courtesy of GENERAL MOTORS CORP.
  58. Raise the vehicle enough to place a suitable lift table under the engine, front frame, and front suspension assembly.
    59. CAUTION: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.
  59. Support the rear of the vehicle with suitable jack stands.
  60. Raise the lift table and/or lower the vehicle to preload the weight of the engine, front frame, and front suspension assembly.
  61. Remove the front frame bolts (2).
  62. With the aid of an assistant, lower the table and/or raise the vehicle to remove the engine, front frame, fuel/brake bundle, and front suspension assembly from the vehicle.
  63. Ensure that all the hoses, wires, pipes, and shock modules clear the vehicle during the removal process.
    64. Fig 12: View Of J 28467-86
    GM1242777Courtesy of GENERAL MOTORS CORP.
  64. Install J 28467-86  to the left cylinder head. See Special Tools . Refer to Engine Support Fixture .
    65. Fig 13: View Of J 28467-87
    GM1242784Courtesy of GENERAL MOTORS CORP.
  65. Install J 28467-87  to the right cylinder head. See Special Tools . Refer to Engine Support Fixture .
  66. Using a suitable engine lift, remove the engine from the front frame assembly.
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