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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Engine Mechanical - 4.8L, 5.3L, 6.0L And 6.2L (3 Of 5)) >> On-Vehicle Repair Instructions (2 Of 2) >> Engine Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Ground Strap & Nut
    GM1823089Courtesy of GENERAL MOTORS CORP.
  1. Open the hood.
  2. Remove the ground strap nut at the hood stud.
  3. Remove the ground strap from the stud.
    4. Fig 2: View Of Hood Strut Rod, Grille End Caps & Hood Hinge Bolts
    GM1711842Courtesy of GENERAL MOTORS CORP.
  4. Assemble 2 sets of the following: an M6 bolt, 2 each 19.05 mm (0.75 in) flat washers and an M6 nut.
  5. Release the retainer securing the hood strut rod to the hood strut bracket stud.
  6. Remove the hood strut rod (1) from the stud.
  7. Remove the air inlet grille end caps (2), lift the end cap up in order to disengage the retainers. (left side shown, right side similar).
  8. Have an assistant support the hood.
  9. Remove the hood hinge bolts (3) and set aside.
    10. Fig 3: View Of Service Piston Notch
    GM1711844Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: There is a positive stop which limits the hood from being opened too far.
  10. Raise the hood until the service position notch (1) in the upper hinge is reached.
  11. Install the 2 sets of the M6 bolts to both the left and right side service notches and tighten finger tight.
    12. NOTE: Refer to Fastener Notice .
  12. Lower the hood until the bolts rest against the lower hinge, tighten the bolts to secure the hood.

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

  13. The hood is now set in the service position.
    14. Fig 4: View Of Generator Battery Jumper Cable & Components
    GM1699546Courtesy of GENERAL MOTORS CORP.
  14. Remove the radiator support. Refer to Radiator Support Replacement .
  15. Remove the air conditioning (A/C) compressor. Refer to Compressor Replacement .
  16. Lower the vehicle.
  17. Remove the intake manifold. Refer to Intake Manifold Replacement (RPOs LC9/LMG/LY5/L76/L92) or Intake Manifold Replacement (RPOs LY2/LY6) .
  18. Remove the generator battery jumper clip (1) from the stud.
  19. Reposition the generator battery jumper out of the way.
    20. Fig 5: View Of Radiator Vent Inlet Hose & Clamps
    GM1699347Courtesy of GENERAL MOTORS CORP.
  20. Remove the radiator vent inlet hose (2) from the radiator inlet hose clip (3).
  21. Reposition the radiator vent inlet hose clamp (1) at the air bleed pipe.
  22. Remove the radiator vent inlet hose (2) from the air bleed pipe and reposition.
    23. Fig 6: View Of Radiator Vent Inlet Hose Clamp At Water Pump
    GM1696566Courtesy of GENERAL MOTORS CORP.
  23. Reposition the radiator inlet hose clamp (3) at the water pump.
  24. Remove the radiator inlet hose from the water pump.
    25. Fig 7: View Of Radiator Outlet Hose
    GM1699336Courtesy of GENERAL MOTORS CORP.
  25. Reposition the radiator outlet hose clamp at the water pump.
  26. Remove the radiator outlet hose from the water pump.
  27. Remove the heater hoses. Refer to Heater Inlet Hose Replacement and Heater Hose Replacement - Outlet .
    28. Fig 8: View Of Engine Harness Electrical Connectors & Inlet Hose Clamp
    GM1697098Courtesy of GENERAL MOTORS CORP.
  28. Disconnect the engine harness electrical connector (1) from the oil pressure sensor.
  29. Disconnect the engine harness electrical connector (2) from the lifter oil manifold.
    30. Fig 9: View Of Engine Wiring Harness, Clip, Bolt & Connector
    GM1696914Courtesy of GENERAL MOTORS CORP.
  30. Disconnect the engine harness electrical connector (2) from the engine coolant temperature (ECT) sensor.
  31. Remove the engine harness clip bolt (1) from the generator/power steering pump bracket.
    32. Fig 10: View Of Engine Ground Strap & Bolt
    GM1699550Courtesy of GENERAL MOTORS CORP.
  32. Remove the engine ground strap bolt from the rear of the left cylinder head.
  33. Remove the engine ground strap from the cylinder head and reposition.
    34. Fig 11: View Of Battery Cable Terminals & Stud
    GM1699543Courtesy of GENERAL MOTORS CORP.
  34. Remove the negative battery cable stud (1) from the right cylinder head.
  35. Remove the negative battery cable terminal (2) and the engine harness ground (3) from the cylinder head.
  36. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    37. Fig 12: View Of Engine Harness Components
    GM1699536Courtesy of GENERAL MOTORS CORP.
  37. Remove the engine harness clip (1) from the ground stud.
  38. Remove the engine harness ground stud (2) from the engine block.
  39. Remove the engine harness grounds (3) from the engine block.
  40. Disconnect the engine harness electrical connector (4) from the knock sensor.
    41. Fig 13: View Of Electrical Connector, Cable Channel Bolt & Pin
    GM1697734Courtesy of GENERAL MOTORS CORP.
  41. Disconnect the engine harness electrical connector (1) from the camshaft position (CMP) sensor wire harness.
  42. Remove the battery cable channel bolt (2).
  43. Slide the channel pin (3) out of the oil pan tab.
    44. Fig 14: View Of Electrical Connectors
    GM1699539Courtesy of GENERAL MOTORS CORP.
  44. Disconnect the engine harness electrical connector (1) from the A/C refrigerant pressure sensor.
  45. Remove the starter motor. Refer to Starter Motor Replacement .
    46. Fig 15: View Of Electrical Connectors & Clips
    GM1698087Courtesy of GENERAL MOTORS CORP.
  46. Disconnect the engine harness electrical connector (1) from the crankshaft position (CKP) sensor.
  47. Disconnect the engine harness electrical connector (2) from the knock sensor.
  48. Disconnect the engine harness electrical connector (4) from the oil level sensor.
  49. Remove the engine harness clip (3) from the transmission oil cooler line bracket.
    50. Fig 16: View Of Coolant Heater Cord
    GM1699547Courtesy of GENERAL MOTORS CORP.
  50. Disconnect the coolant heater cord from the coolant heater, if equipped.
  51. Lower the vehicle.
    52. Fig 17: View Of Power Steering Pump-To-Engine Block Bolt
    GM1699607Courtesy of GENERAL MOTORS CORP.
  52. Remove the rear power steering pump-to-engine block bolt (1500 series shown, 2500 series similar).
    53. Fig 18: View Of Generator Bracket & Bolts
    GM310813Courtesy of GENERAL MOTORS CORP.
  53. Remove the generator bracket bolts.
  54. Position the generator bracket (with power steering pump) aside.
  55. Remove the ignition coil, as required for the proper fit of the J 41798  before lifting the engine. See Special Tools . Refer to Ignition Coil Replacement .
    56. Fig 19: View Of Transmission Oil Level Indicator Tube Nut
    GM1701027Courtesy of GENERAL MOTORS CORP.
  56. Remove the transmission oil level indicator tube nut (1).
    57. Fig 20: View Of Oil Level Indicator Tube & Seal
    GM396798Courtesy of GENERAL MOTORS CORP.
  57. Remove the transmission oil level indicator tube.
    58. Fig 21: View Of J 41798
    GM309151Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  58. Install the J 41798  to the cylinder heads. See Special Tools .

    Tighten: 

    • Tighten the M8 engine lift bracket bolts to 25 N.m (18 lb ft).
    • Tighten the M10 engine lift bracket bolts to 50 N.m (37 lb ft).

    59. Fig 22: View Of Engine Mount To Frame Bolts
    GM1701016Courtesy of GENERAL MOTORS CORP.
  59. For 1500 series vehicles with a 4.8L engine, remove the left and right engine mount to frame bolts (1).
    60. Fig 23: View Of Engine Mount To Frame Bolts
    GM1701017Courtesy of GENERAL MOTORS CORP.
  60. For 1500 series vehicles with a 5.3L, 6.0L, or 6.2L engines, remove the left and right engine mount to frame bolts (1).
    61. Fig 24: View Of Engine Mount Bracket Bolts
    GM1701018Courtesy of GENERAL MOTORS CORP.
  61. For 2500 series vehicles with a 5.3L, 6.0L, or 6.2L engines, remove the left and right engine mount to engine mount bracket bolts (1).
  62. Raise the vehicle.
    63. Fig 25: View Of Engine Shield & Bolts
    GM1696602Courtesy of GENERAL MOTORS CORP.
  63. Remove the engine shield bolts and shield.
    64. Fig 26: View Of Oil Pan Skid Plate & Bolts
    GM1698082Courtesy of GENERAL MOTORS CORP.
  64. For 1500 series vehicles, remove the oil pan skid plate bolts and plate, if equipped.
    65. Fig 27: View Of Oil Pan Skid Plate & Bolts
    GM1698083Courtesy of GENERAL MOTORS CORP.
  65. For 2500 series vehicles, remove the oil pan skid plate bolts and plate, if equipped.
    66. Fig 28: View Of Oil Pan Drain Plug & Seal
    GM1658109Courtesy of GENERAL MOTORS CORP.
  66. Place a suitable drain pan under the oil pan drain plug.
  67. Remove the oil pan drain plug (430).
  68. Allow the oil to drain completely.
  69. Reinstall and tighten the oil pan drain plug.

    Tighten:  Tighten the drain plug to 25 N.m (18 lb ft).

  70. Remove the catalytic converter. Refer to one of the following:
    71. Fig 29: View Of Oil Cooler Line Clip & Bolt
    GM1698074Courtesy of GENERAL MOTORS CORP.
  71. Remove the transmission oil cooler line clip bolt from the oil pan, if equipped.
    72. Fig 30: View Of Flywheel To Torque Converter Bolts
    GM1701022Courtesy of GENERAL MOTORS CORP.
  72. Remove the flywheel to torque converter bolts.
    73. Fig 31: View Of Fuel/Evaporative Emission Pipe & Bracket
    GM1701047Courtesy of GENERAL MOTORS CORP.
  73. Remove the fuel/evaporative emission (EVAP) pipe bracket nut from the transmission stud (typical installation shown).
  74. Remove the fuel/EVAP pipe bracket from the stud. Reposition the bracket out of the way.
    75. Fig 32: View Of Transfer Case Vent Hose Bracket & Nut
    GM1701049Courtesy of GENERAL MOTORS CORP.
  75. For the 4L80-E automatic transmission, remove the transfer case vent hose bracket (1) nut from the stud, if equipped.
  76. For the 4L60-E/4L70-E/6L80-E automatic transmission, remove the transfer case vent hose bracket (2) nut from the stud, if equipped.
  77. Reposition the transfer case vent hose bracket and hose out of the way, if equipped.
    78. Fig 33: View Of Transmission Bolts/Studs
    GM1701038Courtesy of GENERAL MOTORS CORP.
  78. If equipped with the 4L60-E/4L70-E automatic transmission, remove the transmission bolts/studs.
    79. Fig 34: View Of Transmission Bolts/Studs
    GM1701039Courtesy of GENERAL MOTORS CORP.
  79. If equipped with the 4L80-E automatic transmission, remove the transmission bolts/studs.
    80. Fig 35: View Of Transmission Bolts/Studs
    GM1701040Courtesy of GENERAL MOTORS CORP.
  80. If equipped with the 6L80-E automatic transmission, remove the transmission bolts/studs.
  81. Separate the engine from the automatic transmission.
  82. Lower the vehicle.
  83. Position and install an engine hoist to the J 41798  . See Special Tools .
  84. Install a floor jack under the transmission for support.
  85. Remove the engine from the vehicle.
  86. Install the J 21366  to the transmission in order to hold the torque converter. See Special Tools .
  87. Position and install the engine onto an engine stand.
  88. Remove the engine hoist. from the J 41798  . See Special Tools .
    89. Fig 36: View Of J 41798
    GM309151Courtesy of GENERAL MOTORS CORP.
  89. Remove the J 41798  from the engine. See Special Tools .
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