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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (11 Of 11) >> Repair Instructions >> Crankshaft and Bearing Removal and Installation >> Assemble Procedure

Assemble Procedure

  1. GM5585085Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Cylinder Head Gasket- Left Side and Right Side (5) - Install NEW [2x]

  2. Cylinder Head- Left Side and Right Side (4) - Install [2x]
    3. CAUTION:

    Refer to Fastener Caution .

    CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

  3. Cylinder Head Bolt- Left Side (2) - Install NEW and tighten in sequence - Fastener Specifications
    4. CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

  4. Cylinder Head Bolt- Left Side and Right Side (3) - Install NEW and tighten in sequence [19x] - Fastener Specifications
  5. Connect the electrical connector. (1)
  6. GM5585083Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Valve Push Rod (2) - Install [16x]

  7. Valve Rocker Arm (1) - Install [16x] - Fastener Specifications
  8. GM5585082Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Valve Rocker Arm Cover Gasket (1) - Install NEW [2x]

  9. Valve Rocker Arm Cover (2) - Install [2x]
  10. Valve Rocker Arm Cover Bolt (3) - Install and tighten in sequence [19x] - Fastener Specifications
  11. Push the boot of the spark plug wire (8) onto the gas engine ignition spark plug until 2 audible clicks are heard.
  12. GM5000805Courtesy of GENERAL MOTORS COMPANY

    Connect the fuel feed pipe (2) to the fuel pump. Press the fuel feed pipe until an audible click is heard and then install the secondary latch. Metal Collar Quick Connect Fitting Service

  13. Fuel Feed Pipe Bolt (1) - Install and tighten - Fastener Specifications
  14. GM5612992Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT reuse the fuel feed intermediate pipe. If the fuel feed intermediate pipe fittings are loosened or the pipes are removed, the pipes MUST be replaced.

    Fuel Feed Intermediate Pipe (1) - Install NEW

    1. Slide fuel feed pipe fitting nuts (3) back along fuel feed intermediate pipe (1) to reveal the formed ends (2) of the fuel feed pipe.
    2. Carefully install the formed ends (2) of the fuel feed pipe into the sockets of the left hand and right hand fuel rails, taking care not to hit the formed end of the pipes on the threaded sockets on the rails.
    3. Hold the pipe firmly in place and hand tighten the fuel feed pipe fitting nuts (3) onto the threads on the fuel rails.
  15. Fuel Feed Pipe Bolt (4) - Install and tighten - Fastener Specifications
  16. Fuel Feed Intermediate Pipe Nut (3) @Fuel Feed Intermediate Pipe (1) - Tighten [2x] - Fastener Specifications
  17. GM5568606Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT reuse the fuel feed intermediate pipe. If the fuel feed intermediate pipe fittings are loosened or the pipes are removed, the pipes MUST be replaced.

    Clean the cylinder head pocket around the injectors of any dirt or buildup.

  18. Fuel Feed Intermediate Pipe (1) - Install NEW
    1. Slide fuel feed pipe fitting nuts (2) back along fuel feed intermediate pipe (1) to reveal the formed ends (3) of the fuel feed pipe.
    2. Carefully install the formed ends (3) of the fuel feed pipe into the sockets of the fuel pump (4) and the fuel feed intermediate pipe (5), taking care not to hit the formed end of the pipes on the threaded sockets on the rails.
    3. Hold the pipe firmly in place and hand tighten the fuel feed pipe fitting nuts (2) onto the threads on the fuel rails.
  19. Fuel Feed Intermediate Pipe Nut (2) @Fuel Feed Intermediate Pipe (1) - Tighten [2x] - Fastener Specifications
  20. GM5039543Courtesy of GENERAL MOTORS COMPANY

    Install the crankshaft position sensor (2). Rotate the sensor until the locating hole in the bracket aligns with the bolt hole in the block.

  21. Install and tighten the sensor bolt (1). Fastener Specifications
  22. GM4994650Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Gasket (6) - Install NEW

  23. Exhaust Manifold- Right Side (5) - Install
  24. If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:
    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
    25. CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

  25. Exhaust Manifold Bolt (4) - Install NEW and tighten in sequence [5x] - Fastener Specifications
  26. Exhaust Manifold Heat Shield - Right Side (3) - Install [3x]
  27. Exhaust Manifold Heat Shield Bolt (2) - Install and tighten [3x] - Fastener Specifications
  28. GM4994649Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Gasket (6) - Install NEW

  29. Exhaust Manifold- Right Side (5) - Install
  30. If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:
    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
    31. CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

  31. Exhaust Manifold Bolt (4) - Install NEW and tighten in sequence [5x] - Fastener Specifications
  32. Exhaust Manifold Heat Shield - Left Side (3) - Install [3x]
  33. Exhaust Manifold Heat Shield Bolt (2) - Install and tighten [3x] - Fastener Specifications
  34. GM6178912Courtesy of GENERAL MOTORS COMPANY

    Inspect the inside of the spark plug rubber boot for a thin, even coat of grease. If there is no grease present or additional grease is necessary, apply a thin coating of dielectric grease evenly to the inside of the spark plug rubber boot up to a depth of 15 mm from the end of the boot. Adhesives, Fluids, Lubricants, and Sealers

  35. Push the boot of the spark plug wire (4) onto the gas engine ignition spark plug until 2 audible clicks are heard.
  36. GM4997026Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube Seal (4) - Install NEW

  37. Oil Level Indicator Tube (3) - Install
  38. Oil Level Indicator Tube Bolt (2) - Install and tighten - Fastener Specifications
  39. Oil Level Indicator (1) - Install
  40. GM5642644Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Apply a 3 mm (0.118 in) bead of RTV sealant on the rear cover (1). Apply a 5 mm (0.197 in) bead of RTV sealant on the rear cover as shown (2). Adhesives, Fluids, Lubricants, and Sealers

  41. GM5001778Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Rear Oil Seal Housing Locating Pin (4) - Install

  42. Crankshaft Rear Oil Seal Housing Gasket (3) - Install NEW
  43. Crankshaft Rear Oil Seal Housing (2) - Install
  44. Crankshaft Rear Oil Seal Housing Bolt (1) - Install and tighten in sequence [12x] - Fastener Specifications
  45. GM5022568Courtesy of GENERAL MOTORS COMPANY

    Install the EN-41479  Crankshaft Rear Oil Seal Installer (2) and bolts onto the crankshaft snug, do NOT over tighten.

    46. NOTE:
    • For proper orientation, note the installation direction of the oil seal. The oil seal is a reverse-lip design. Install with "THIS SIDE OUT" displayed.
    • Do NOT lubricate the oil seal sealing surface.
  46. Install the crankshaft rear oil seal onto the EN-41479-B  Crankshaft Rear Oil Seal Installer Guide (2) and push the seal to the rear seal bore.
  47. Install the EN-41479-10  Crankshaft Rear Oil Seal Installer Adapter (3) onto EN-41479  Crankshaft Rear Oil Seal Installer (4)
  48. Thread the EN-41479  Crankshaft Rear Oil Seal Installer (4) threaded rod into the EN-41479-2B  Crankshaft Rear Oil Seal Installer Guide (2) until the tool contacts the oil seal.
  49. GM4994654Courtesy of GENERAL MOTORS COMPANY

    Automatic Transmission Flex Plate (2) - Install

  50. If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:
    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  51. Automatic Transmission Flex Plate Bolt (1) - Install NEW and hand tighten [8x]
  52. GM5001787Courtesy of GENERAL MOTORS COMPANY

    EN-42386-A  Flywheel Holding Tool (1) - Install

  53. Use one M10 - 1.5 x 120 mm and one M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the EN-42386-A  Flywheel Holding Tool bolts to 50 N.m (37 lb ft)
  54. GM4994654Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

    Automatic Transmission Flex Plate Bolt (1) - Tighten in sequence [8x] - Fastener Specifications

  55. GM5001795Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Sprocket (1) - Install

  56. GM5028538Courtesy of GENERAL MOTORS COMPANY

    Compress the timing chain tensioner guide and install the EN 46330  Timing Belt Tensioner Retaining Pin (1).

  57. GM1714946Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Refer to Camshaft Position Actuator Removal and Installation Warning .

    Remove the tie strap (1) from the actuator.

  58. GM4976414Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The alignment mark on the camshaft position actuator and the alignment mark on the crankshaft sprocket are off-center from the oil pump feed hole gasket on the timing chain tensioner. The alignment marks need to be lined up with one another, but NOT with the oil feed hole.

    The camshaft and the crankshaft sprocket alignment marks MUST be aligned properly.

  59. GM4976416Courtesy of GENERAL MOTORS COMPANY

    If the alignment marks on the camshaft position actuator and crankshaft sprocket are difficult to see or line up, an alternate method can be used. Mark the gear tooth directly opposite of the alignment mark on the camshaft position actuator (a). Mark the gear tooth directly opposite of the alignment mark on the crankshaft sprocket (b).

  60. GM4976417Courtesy of GENERAL MOTORS COMPANY

    The timing chain has 30 links. Place links (1) and (30) on either side of the mark made on the camshaft position actuator and place links (15) and (16) on either side of the mark made on the crankshaft sprocket. This will ensure that the factory alignment marks are in the correct position and that the engine is properly timed.

  61. GM5028543Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Properly locate the camshaft position actuator onto the locating pin of the camshaft.
    • The sprocket teeth and timing chain must mesh.
    • The camshaft and the crankshaft sprocket alignment marks MUST be aligned properly.
    • Do not use the camshaft position solenoid valve again. Install a NEW valve during assembly.

    Identify the alignment hole (1) in the rear face of the camshaft position actuator and the locating pin (2) on the front face of the camshaft.

  62. GM5028535Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Refer to Camshaft Position Actuator Removal and Installation Warning .

    Install the camshaft position actuator and timing chain. Align the hole in the rear face of the camshaft position actuator with the locating pin on the front face of the camshaft. If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks. Use care to install the actuator completely onto the front of the camshaft. Position fingers onto the face of the actuator sprocket and push the actuator onto the front of the camshaft. Never push on the reluctor wheel when attempting to install the actuator.

  63. GM5001788Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

    CAUTION:

    Refer to Component Fastener Tightening Caution .

    Camshaft Position Actuator Solenoid Valve (1) - Install NEW and tighten - Fastener Specifications

  64. GM5028537Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    It is possible to push the camshaft rearward when installing the camshaft position valve. Verify that the camshaft lobes are centered in the valve lifter bores after the camshaft position actuator is installed.

    Locate a straight edge (1) across the front face of the engine block and inspect for proper installation of the camshaft position actuator (2) and timing chain (3). With the camshaft position actuator properly and completely installed onto the front of camshaft, the timing chain will not protrude beyond the front face of engine block.

  65. GM4976414Courtesy of GENERAL MOTORS COMPANY

    Inspect the sprockets for proper alignment. The mark on the camshaft position actuator sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.

  66. GM5028592Courtesy of GENERAL MOTORS COMPANY

    EN-46330  Timing Belt Tensioner Retaining Pin (1) - Remove

  67. GM5001774Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Prior to installing the oil pump, ensure that oil pump housing gasket is fully installed in the timing chain tensioner assembly and is not damaged. If the gasket is missing or damaged, replace the tensioner assembly.

    Oil Pump (1) - Install

  68. Oil Pump Bolt (2) - Install and tighten in sequence [4x] - Fastener Specifications
  69. GM5617436Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Apply a 3 mm (0.118 in) bead of RTV sealant on the rear cover (1). Adhesives, Fluids, Lubricants, and Sealers

  70. Apply a 5 mm (0.197 in) bead of RTV sealant on the rear cover (2). Adhesives, Fluids, Lubricants, and Sealers
  71. GM5001122Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover Locating Pin (5) - Install

  72. {If equipped} Connect the oil pump flow control solenoid wire (1).
  73. Engine Front Cover (4) - Install
  74. Engine Front Cover Bolt (2) -M8 x 50.7 [2x] - Install and tighten in sequence - Fastener Specifications
  75. Engine Front Cover Bolt (3) -M8 x 30.7 [8x] - Install and tighten in sequence - Fastener Specifications
  76. GM5020133Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • For proper orientation, note the installation direction of the oil seal. The oil seal is a reverse-lip design. Install with "THIS SIDE OUT" displayed.
    • Do NOT lubricate the oil seal sealing surface.

    Install the crankshaft front oil seal (1) onto the threaded rod, nut and washer from EN-41478-A  Crankshaft Front Oil Seal Installer and EN-51091  Crankshaft Front Oil Seal Installer.

  77. Install the EN-41478-A  Crankshaft Front Oil Seal Installer threaded rod, nut and washer (3) and EN-51091  Crankshaft Front Oil Seal Installer (2) and crankshaft front oil seal, into the end of the crankshaft.
  78. Use the EN-41478-A  Crankshaft Front Oil Seal Installer (3) and EN-51091  Crankshaft Front Oil Seal Installer (2) in order to install the crankshaft front oil seal into the cover bore.
    1. Use a wrench and hold the hex on the installer bolt.
    2. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore.
    3. Remove the tool.
    4. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.
  79. Rotate the handle of the tool clockwise until the seal enters the rear housing and bottoms into the seal bore.
  80. Remove the tools.
  81. Rotate the engine over on the engine stand.
  82. GM5577670Courtesy of GENERAL MOTORS COMPANY

    Oil Pan Front Seal (3) - Install NEW

  83. Oil Pan High Pressure Port Seal (2) - Install NEW
  84. GM5570478Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Apply a 3 mm (0.118 in) bead of RTV sealant on the engine front cover, engine block, and crankshaft rear oil seal housing as shown (1). Apply a 5 mm (0.197 in) bead of RTV sealant at the corner areas as shown (2). Adhesives, Fluids, Lubricants, and Sealers

  85. GM4997027Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install and align the oil pan within 10 minutes of applying the sealer.

    Oil Pan (3) - Install

  86. Oil Pan Bolt (1) - Install and tighten in sequence [14x] - Fastener Specifications
  87. Oil Pan Bolt (2) - Install and tighten in sequence [2x] - Fastener Specifications
  88. Rotate the engine over on the engine stand.
  89. GM5948959Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer (1) - Loosely install

  90. GM5948974Courtesy of GENERAL MOTORS COMPANY

    Install the EN-41478-A  Crankshaft Front Oil Seal Installer (3) and EN-41665-A  Crankshaft Balancer and Sprocket Installer (2) to the crankshaft.

  91. Using the EN-41665-A  Crankshaft Balancer and Sprocket Installer (2) properly seat the crankshaft balancer (1).
  92. Remove the EN-41478-A  Crankshaft Front Oil Seal Installer (3) and EN-41665-A  Crankshaft Balancer and Sprocket Installer (2).
  93. GM5948803Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

    Crankshaft Balancer Bolt (1) - Install NEW and tighten - Fastener Specifications

  94. GM5001787Courtesy of GENERAL MOTORS COMPANY

    Remove the M10 - 1.5 x 120 mm and M10 - 1.5 x 45 mm bolts.

  95. EN-42386-A  Flywheel Holding Tool (1) - Remove
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