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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (9 Of 11) >> Repair Instructions >> Engine Replacement >> Removal Procedure

Removal Procedure

GM5587488Courtesy of GENERAL MOTORS COMPANY
  1. Mount the engine (1) onto the engine stand (2). See Engine Removal and Installation (1 Of 3) ENGINE REMOVAL AND INSTALLATION (2 OF 3) , or ENGINE REMOVAL AND INSTALLATION (3 OF 3)
    GM5053741Courtesy of GENERAL MOTORS COMPANY
  2. Remove EN-36857 Engine Lift Bracket (1) and EN-52059 Engine Support Fixture Adapter Bolt - M10 (2) from the cylinder head.
    GM5053735Courtesy of GENERAL MOTORS COMPANY
  3. Remove EN-36857 Engine Lift Bracket (1) and EN-52059 Engine Support Fixture Adapter Bolt - M10 (2) from the cylinder head.
    GM5619108Courtesy of GENERAL MOTORS COMPANY
  4. EN-42386-A Flywheel Holding Tool (1) - Install
  5. Install 1 M10-1.5 x 120 mm (3) bolt and 1 M10-1.5 x 45 mm bolt (2).
    CAUTION: FASTENER CAUTION
  6. Tighten the 2 bolts (2, 3) to 50 N.m (37 lb ft).
    GM5619300Courtesy of GENERAL MOTORS COMPANY
  7. Automatic Transmission Flex Plate Bolt (1) - Remove and DISCARD [8x]
    GM5619302Courtesy of GENERAL MOTORS COMPANY
  8. Automatic Transmission Flex Plate (1) - Remove
  9. Remove the M10-1.5 x 120 mm bolt (3) and the M10-1.5 x 45 mm bolt (2).
  10. EN-42386-A Flywheel Holding Tool (1) - Remove
    GM5619486Courtesy of GENERAL MOTORS COMPANY
  11. Engine Mount Engine Side Bolt - Left Side (1) - Remove [4x]
  12. Engine Mount - Left Side (2) - Remove
    GM5619488Courtesy of GENERAL MOTORS COMPANY
  13. Engine Mount Engine Side Bolt - Right Side (1) - Remove [4x]
  14. Engine Mount - Right Side (2) - Remove
    GM5619235Courtesy of GENERAL MOTORS COMPANY
  15. Rotate the oil filler tube (1) counterclockwise and remove from the valve rocker arm cover.
    GM5536367Courtesy of GENERAL MOTORS COMPANY
  16. Inspect the oil filler tube seal (2) on the oil filler tube (1) and replace as necessary.
    GM5619113Courtesy of GENERAL MOTORS COMPANY
  17. Belt Idler Pulley Bracket Bolt (1) - Remove [3x]
  18. Remove the belt idler pulley and belt idler pulley bracket (2) as an assembly.
    GM5619273Courtesy of GENERAL MOTORS COMPANY
  19. Grasp the left side valve rocker arm cover insulator (3) and lift up disengaging the 3 upper intake manifold sight shield grommets (2) from the 3 valve rocker arm cover insulator retainers (1).
  20. Valve Rocker Arm Cover Insulator - Left Side (3) - Remove
    GM5619274Courtesy of GENERAL MOTORS COMPANY
  21. Grasp the right side valve rocker arm cover insulator (3) and lift up disengaging the 3 upper intake manifold sight shield grommets (1) from the 3 valve rocker arm cover insulator retainers (2).
  22. Valve Rocker Arm Cover Insulator - Right Side (3) - Remove
    GM5541819Courtesy of GENERAL MOTORS COMPANY
    NOTE: Pull only on the spark plug wire boot to remove the wire.
    NOTE: Note: Inspect the spark plug wire for damage and replace if necessary.
  23. Twist the 4 spark plug wire boots a 1/2 turn and remove the 4 spark plug wires (1) from the 4 gas engine ignition spark plugs (2).
    GM5549185Courtesy of GENERAL MOTORS COMPANY
    NOTE: Pull only on the spark plug wire boot to remove the wire.
    NOTE: Note: Inspect the spark plug wire for damage and replace if necessary.
  24. Twist the 4 spark plug wire boots a 1/2 turn and remove the 4 spark plug wires (1) from the 4 ignition coils (2).
    GM5550055Courtesy of GENERAL MOTORS COMPANY
  25. Disconnect the 4 ignition coil electrical connectors.
  26. Ignition Coil Bolt (1) - Remove [8x]
  27. Ignition Coil - Left Side (2) - Remove [4x]
    GM5549243Courtesy of GENERAL MOTORS COMPANY
  28. Twist the 4 spark plug wire boots a 1/2 turn and remove the 4 spark plug wires (1) from the 4 gas engine ignition spark plugs (2).
    GM5549236Courtesy of GENERAL MOTORS COMPANY
  29. Twist the 4 spark plug wire boots a 1/2 turn and remove the 4 spark plug wires (1) from the 4 ignition coils (2).
    GM5550107Courtesy of GENERAL MOTORS COMPANY
  30. Disconnect the 4 ignition coil electrical connectors.
  31. Ignition Coil Bolt (1) - Remove [8x]
  32. Ignition Coil - Right Side (2) - Remove [4x]
    GM5619337Courtesy of GENERAL MOTORS COMPANY
  33. Exhaust Manifold Heat Shield Bolt (1) - Remove [3x]
  34. Exhaust Manifold Heat Shield - Left Side (2) - Remove
    GM5619338Courtesy of GENERAL MOTORS COMPANY
  35. Exhaust Manifold Bolt (2) - Remove and DISCARD [5x]
  36. Exhaust Manifold - Left Side (3) - Remove
  37. Exhaust Manifold Gasket (1) - Remove and DISCARD
    GM5619366Courtesy of GENERAL MOTORS COMPANY
  38. Oil Level Indicator Tube Bolt (1) - Remove
    GM5619368Courtesy of GENERAL MOTORS COMPANY
  39. Remove the oil level indicator, oil level indicator tube and oil level indicator seal as an assembly (1)
  40. Oil Level Indicator Seal (2) - Remove and DISCARD
    GM5619422Courtesy of GENERAL MOTORS COMPANY
  41. Exhaust Manifold Heat Shield Bolt (1) - Remove [3x]
  42. Exhaust Manifold Heat Shield - Right Side (2) - Remove
    GM5619423Courtesy of GENERAL MOTORS COMPANY
  43. Exhaust Manifold Bolt (2) - Remove and DISCARD [5x]
  44. Exhaust Manifold - Right Side (3) - Remove
  45. Exhaust Manifold Gasket (1) - Remove and DISCARD
    GM5568606Courtesy of GENERAL MOTORS COMPANY
    CAUTION: Fuel feed intermediate pipes will be delivered with shipping caps that are meant to protect the mating joint threads. Do NOT remove shipping caps until the pipe is to be installed and joints are to be secured. Failure to do so could result in damage to the mating threads.
    NOTE: Do NOT reuse the fuel feed intermediate pipe (2). If the 2 fuel feed intermediate pipe nuts (1) are loosened or the fuel feed intermediate pipes are removed, the fuel feed intermediate pipes MUST be replaced.
  46. Fuel Feed Intermediate Pipe Nut (1) @ Fuel Feed Intermediate Pipe (2) - Loosen until disengaged [2x]
  47. Fuel Feed Intermediate Pipe (2) - Remove and DISCARD
    GM5612992Courtesy of GENERAL MOTORS COMPANY
    NOTE: Note: Do NOT reuse the fuel feed intermediate pipe (3). If the 2 fuel feed intermediate pipe nuts (1) are loosened or the fuel feed intermediate pipes are removed, the fuel feed intermediate pipes MUST be replaced.
  48. Fuel Feed Intermediate Pipe Nut (1) - Loosen until disengaged [2x]
  49. Fuel Feed Pipe Bolt (2) - Remove
  50. Fuel Feed Intermediate Pipe (3) - Remove and DISCARD
  51. Disconnect and reposition the fuel pump and fuel injector wiring harness as necessary.
    GM5568498Courtesy of GENERAL MOTORS COMPANY
    CAUTION: Alternately loosen the fuel pump bolts one turn at a time until the pump is fully disengaged from fuel pump lifter follower. Trying to remove the pump bolts without even side-to-side loosening may result in pump plunger damage
  52. Fuel Pump Bolt (1) - Remove [2x]
  53. Fuel Pump Cover (2) - Remove
  54. Fuel Pump Bolt Retainer (3) - Remove [2x]
  55. Fuel Pump (4) - Remove
  56. Fuel Pump Bracket Gasket (5) - Remove and DISCARD
  57. Clean the cylinder head around the fuel injectors on bank 1 of any dirt or buildup.
    GM5569848Courtesy of GENERAL MOTORS COMPANY
    NOTE: The 4 bank 1 fuel injection fuel rail bolts (1) are retained in the bank 1 fuel injection fuel rail and may be difficult to remove.
  58. Remove the 4 bank 1 fuel injection fuel rail bolts (1).
    GM5362144Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • In some cases, the fuel injectors may be difficult to remove because of heavy carbon build-up or other factors. If the fuel injectors are difficult to remove, apply solvent to the base of the fuel injector bores, and allow adequate soaking time, to loosen the fuel injectors.
    • The bank 1 fuel injection fuel rail and fuel injectors are removed as an assembly.
    • To prevent material from entering the combustions chambers make sure the area around each fuel injector is clean and free of debris before the fuel injectors are removed from the fuel injector bores.
  59. Install 2 sets of EN-49248 Injector Rail Assembly Remover (1) on bank 1.
  60. Install one EN-49248 Injector Rail Assembly Remover (1) in each of the 4 bank 1 fuel injection fuel rail bolt bores.
  61. Turn each EN-49248 Injector Rail Assembly Remover (1) an even amount to pull the fuel injection fuel rail bank 1 (2) and fuel injectors out evenly.
  62. Simultaneously lift both ends of the bank 1 fuel injection fuel rail (2) and remove from the left side cylinder head.
    GM5571655Courtesy of GENERAL MOTORS COMPANY
  63. Fuel Injector Nozzle Housing Seal (1) - Remove and DISCARD [8x]
    GM5571633Courtesy of GENERAL MOTORS COMPANY
  64. Fuel Injector Seal (1) - Remove and DISCARD [4x]
  65. Clean the cylinder head around the fuel injectors on bank 2 of any dirt or buildup.
    GM5585529Courtesy of GENERAL MOTORS COMPANY
    NOTE: The bank 2 fuel injection fuel rail bolts are retained in the bank 2 fuel injection fuel rail and may be difficult to remove.
  66. Remove the 4 bank 2 fuel injection fuel rail bolts (1).
    GM5362144Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • In some cases, the fuel injectors may be difficult to remove because of heavy carbon build-up or other factors. If the fuel injectors are difficult to remove, apply solvent to the base of the fuel injector bores, and allow adequate soaking time, to loosen the fuel injectors.
    • The bank 2 fuel injection fuel rail and fuel injectors are removed as an assembly.
    • To prevent material from entering the combustions chambers make sure the area around each fuel injector is clean and free of debris before the fuel injectors are removed from the fuel injector bores.
  67. Install 2 sets of EN-49248 Injector Rail Assembly Remover (1) on bank 2.
  68. Install one EN-49248 Injector Rail Assembly Remover (1) in each of the 4 bank 2 fuel injection fuel rail bolt bores.
  69. Turn each EN-49248 Injector Rail Assembly Remover (1) an even amount to pull the fuel injection fuel rail bank 2 (2) and fuel injectors out evenly.
    CAUTION:
    • Remove the fuel rail assembly carefully in order to prevent damage to the injector electrical connector terminals and the injector spray tips. Support the fuel rail after the fuel rail is removed in order to avoid damaging the fuel rail components.
    • Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering open pipes and passages.
  70. Simultaneously lift both ends of the bank 2 fuel injection fuel rail (2) and remove from the right side cylinder head.
    GM5571655Courtesy of GENERAL MOTORS COMPANY
  71. Fuel Injector Nozzle Housing Seal (1) - Remove and DISCARD [8x]
    GM5571633Courtesy of GENERAL MOTORS COMPANY
  72. Fuel Injector Seal (1) - Remove and DISCARD [4x]
    GM5619658Courtesy of GENERAL MOTORS COMPANY
  73. Engine Wiring Harness Bolt (1) - Remove [2x]
    GM5619659Courtesy of GENERAL MOTORS COMPANY
  74. Valve Rocker Arm Oil Control Valve Extension Harness (1) @ Valve Rocker Arm Oil Control Valve Harness - Disconnect
    GM5619687Courtesy of GENERAL MOTORS COMPANY
  75. Knock Sensor Shield Bolt (1) - Remove
  76. Knock Sensor Shield (2) - Remove
    GM5619688Courtesy of GENERAL MOTORS COMPANY
  77. Knock Sensor Bolt (1) - Remove
  78. Knock Sensor - Left Side (2) - Remove
    GM5619689Courtesy of GENERAL MOTORS COMPANY
  79. {If equipped} Engine Coolant Heater (1) - Remove
    GM5619710Courtesy of GENERAL MOTORS COMPANY
  80. Knock Sensor Bolt (1) - Remove
  81. Knock Sensor - Right Side (2) - Remove
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