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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Mechanical - 4.6L (LH2) - 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.
    Fig 1: Identifying J 42640
    GM333146Courtesy of GENERAL MOTORS CORP.
  1. Install J 42640  to the steering column.
  2. Disconnect the positive and negative battery cables from the battery. Refer to Battery Negative Cable Disconnection and Connection and to Battery Positive Cable Replacement (LH2) in Engine Electrical.
  3. Remove the cross vehicle brace. Refer to Cross Vehicle Brace Replacement (DX) in Body Front End.
  4. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
    5. Fig 2: View Of Air Cleaner Assembly
    GM1201221Courtesy of GENERAL MOTORS CORP.
  5. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.6L (LH2).
  6. Disconnect the surge tank inlet hose and position the hose to the engine.
    7. Fig 3: View Of Suction Hose Retaining Feature
    GM840242Courtesy of GENERAL MOTORS CORP.
  7. Evacuate the air conditioning system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
  8. Disconnect the air conditioning suction hose fitting at the top of the left shock tower. Refer to Suction Hose Replacement (LH2) in Heating, Ventilation and Air Conditioning.
  9. Remove the suction hose from the retaining feature (1). Position the line to the engine.
  10. Disconnect the air conditioning liquid line from the condenser. Refer to Liquid Line Replacement (LH2) in Heating, Ventilation and Air Conditioning.
  11. Remove the air conditioning liquid line from the retaining feature on the fan shroud.
    12. Fig 4: View Of Vacuum Check Valve & Brake Booster
    GM923830Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the brake booster vacuum line (1) from the brake booster (2). Position the brake booster line to the engine.
  13. Disconnect the electrical connector on the brake fluid level switch from the master cylinder.
    14. Fig 5: Removing & Installing Master Cylinder
    GM420706Courtesy of GENERAL MOTORS CORP.
  14. Remove the master cylinder mounting nuts.
  15. Position the master cylinder to the engine. Hold the master cylinder in position by using mechanics wire. Do not disconnect the brake lines from the master cylinder.
  16. Relieve the fuel system pressure. Refer to Fuel Pressure Relief in Engine Controls - 4.6L (LH2).
    17. Fig 6: View Of Hose Retainers
    GM1235105Courtesy of GENERAL MOTORS CORP.
  17. Remove the fuel line retainer (1) from the vehicle. The retainer is located on the bracket attached to the heater lines on the front of the dash.
  18. Disconnect the engine wiring harness connector C102 at the front of the dash. Refer to Harness Routing Views in Wiring Systems.
  19. Disconnect the underhood fuse block connector C5 located between the right shock tower and the cam cover. Refer to Harness Routing Views in Wiring Systems.
  20. Remove the underhood electrical center cover.
    21. Fig 7: View Of Battery Cables
    GM1201077Courtesy of GENERAL MOTORS CORP.
  21. Remove the negative battery cable (2) 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.
    22. Fig 8: View Of Positive Battery Cable
    GM1296150Courtesy of GENERAL MOTORS CORP.
  22. 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.
  23. Disconnect the chassis electrical connector at the top of the right shock tower. Position the wire to the engine.
  24. Disconnect the electrical connector for the transmission control module and position the wiring harness to the engine. Refer to Transmission Control Module Replacement in Automatic Transmission - 5L40-E/5L50-E.
  25. Disconnect the engine wiring harness C5 connector from the inside of the underhood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems.
  26. Disconnect the electrical connector C113 at the right frame rail. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems.
  27. Remove the engine cooling fans. Refer to the appropriate procedure in Engine Cooling:
  28. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  29. Remove the front tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
    30. Fig 9: View Of Front Wheelhouse Liner
    GM1232328Courtesy of GENERAL MOTORS CORP.
  30. Remove the right and left wheelhouse splash shields. Refer to Engine Splash Shield Replacement in Body Front End.
  31. Remove the right and left front fascia extensions. Refer to Front Bumper Fascia Extension Replacement in Bumpers.
  32. Working through the right wheelhouse, remove the brace that secures the windshield washer reservoir to front frame.
  33. Place a suitable drain pan under the vehicle.
  34. Working through the left wheelhouse, disconnect the transmission oil cooler lines located near the air conditioning compressor.
    35. Fig 10: View Of Steering Column Intermediate Shafts
    GM1198603Courtesy of GENERAL MOTORS CORP.
  35. Remove the bolt (3) that secures the center intermediate shaft to the lower intermediate shaft.
  36. Separate the 2 shafts.
  37. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (GE 47719) in Engine Cooling.
    38. Fig 11: View Of Power Steering Cooler Bracket-To-Air Conditioning Condenser Retaining Bolts
    GM908531Courtesy of GENERAL MOTORS CORP.
  38. Remove the bolt securing the power steering cooler lines to the radiator assembly.
  39. Lower the vehicle.
  40. Remove the radiator, condenser, and transmission oil cooler as an assembly. Refer to Radiator Replacement (LH2 Standard Cooling) or Radiator Replacement (LH2 Heavy Duty Cooling) in Heating, Ventilation and Air Conditioning.
  41. Raise the vehicle.
  42. Remove the bolts from the mounting bracket on the power steering oil cooler. Refer to Power Steering Fluid Cooler Replacement (LH2 or LY7 with V92) in Power Steering System. Position the oil cooler to the engine. Secure the cooler to the engine with mechanics wire.
    43. Fig 12: View Of Transfer Case
    GM830369Courtesy of GENERAL MOTORS CORP.
  43. Remove the transfer case, if equipped. Refer to Transfer Case Assembly Replacement in Transfer Case - BW 4476.
  44. Remove the transmission assembly. Refer to Transmission Replacement (w/RPO LH2) in Automatic Transmission - 5L40-E/5L50-E.
  45. Remove the brake bundle clips from the right and left frame rails. Do not remove the clips from the brake lines.
  46. Disconnect the fuel line from the fuel filter. Refer to Fuel Hose/Pipes Replacement - Chassis in Engine Controls - 4.6L (LH2).
  47. Disconnect the evaporative emission (EVAP) hose connection at the rear of the fuel filter. Refer to Evaporative Emission Hoses/Pipes Replacement - Chassis/Canister in Engine Controls - 4.6L (LH2).
  48. Disconnect the rear brake lines from the bracket above the rear axle assembly. Refer to Brake Pipe Replacement in Hydraulic Brakes.
  49. 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 in Engine Controls - 4.6L (LH2).
  50. Remove the fuel filter bracket to provide a removal path for the fuel and brake line bundle assembly.
  51. Remove the fuel and brake line bundle bracket from the right side wheelhouse.
  52. Lower the vehicle.
  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. 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.
  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 13: View Of J 28467-86
    GM1242777Courtesy of GENERAL MOTORS CORP.
  64. Install J 28467-86  to the left cylinder head. Refer to Engine Support Fixture .
    65. Fig 14: View Of J 28467-87
    GM1242784Courtesy of GENERAL MOTORS CORP.
  65. Install J 28467-87  to the right cylinder head. Refer to Engine Support Fixture .
  66. Using a suitable engine lift, remove the engine from the front frame assembly.
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