GM Service Manual Online
For 1990-2009 cars only

To overhaul the engine, follow the sequence below.

  1. Draining Fluids and Oil Filter Removal
  2. Engine Flywheel Removal
  3. Drive Belt Tensioner Removal
  4. Oil Level Indicator and Tube Removal
  5. Water Outlet Removal
  6. Water Pump Removal
  7. Intake Manifold Removal
  8. Intake Manifold Removal
  9. Exhaust Crossover Removal
  10. Exhaust Manifold Removal
  11. Exhaust Manifold Removal
  12. Valve Rocker Arm Cover Removal
  13. Valve Rocker Arm Cover Removal
  14. Valve Rocker Arm and Push Rod Removal
  15. Cylinder Head Removal
  16. Valve Lifter Removal
  17. Crankshaft Balancer Removal
  18. Crankshaft Front Oil Seal Removal
  19. Engine Front Cover Removal
  20. Oil Filter Adapter Removal
  21. Oil Pump Cover and Gear Set Removal
  22. Timing Chain and Sprockets Removal
  23. Camshaft Removal
  24. Balance Shaft Removal
  25. Crankshaft Rear Oil Seal Removal
  26. Crankshaft Rear Oil Seal and Housing Removal
  27. Oil Pan Removal
  28. Oil Pump Suction Pipe and Screen Assembly Removal
  29. Piston, Connecting Rod, and Bearing Removal
  30. Crankshaft and Bearing Removal
  31. Engine Block Plug Removal
  32. Engine Block Cleaning and Inspection
  33. Cylinder Boring and Honing
  34. Crankshaft and Bearing Cleaning and Inspection
  35. Crankshaft Balancer Cleaning and Inspection
  36. Engine Flywheel Cleaning and Inspection
  37. Piston and Connecting Rod Disassemble
  38. Piston, Connecting Rod, and Bearing Cleaning and Inspection
  39. Piston Selection
  40. Piston and Connecting Rod Assemble
  41. Camshaft Bearing Removal
  42. Camshaft and Bearings Cleaning and Inspection
  43. Camshaft Bearing Installation
  44. Camshaft Timing Chain and Sprocket Cleaning and Inspection
  45. Valve Rocker Arm and Push Rod Cleaning and Inspection
  46. Valve Lifters and Guides Cleaning and Inspection
  47. Cylinder Head Disassemble
  48. Cylinder Head Cleaning and Inspection
  49. Valve Guide Reaming, and Valve and Seat Grinding
  50. Cylinder Head Assemble
  51. Oil Pump Cleaning and Inspection
  52. Valve Rocker Arm Cover Cleaning and Inspection
  53. Oil Pan Cleaning and Inspection
  54. Intake Manifold Cleaning and Inspection
  55. Intake Manifold Cleaning and Inspection
  56. Exhaust Manifold Cleaning and Inspection
  57. Water Pump Cleaning and Inspection
  58. Engine Front Cover Cleaning and Inspection
  59. Balance Shaft Cleaning and Inspection
  60. Balance Shaft Bearing and/or Bushing Removal
  61. Balance Shaft Bearing and/or Bushing Installation
  62. Service Prior to Assembly
  63. Engine Block Plug Installation
  64. Crankshaft and Bearing Installation
  65. Piston, Connecting Rod, and Bearing Installation
  66. Oil Pump Suction Pipe and Screen Assembly Installation
  67. Oil Pan Installation
  68. Camshaft Installation
  69. Balance Shaft Installation
  70. Crankshaft Rear Oil Seal and Housing Installation
  71. Crankshaft Rear Oil Seal Installation
  72. Timing Chain and Sprockets Installation
  73. Oil Pump Cover and Gear Set Installation
  74. Oil Filter Adapter Installation
  75. Engine Front Cover Installation
  76. Crankshaft Front Oil Seal Installation
  77. Crankshaft Balancer Installation
  78. Valve Lifter Installation
  79. Cylinder Head Installation
  80. Valve Rocker Arm and Push Rod Installation
  81. Valve Rocker Arm Cover Installation
  82. Valve Rocker Arm Cover Installation
  83. Exhaust Manifold Installation
  84. Exhaust Manifold Installation
  85. Exhaust Crossover Installation
  86. Intake Manifold Installation
  87. Intake Manifold Installation
  88. Water Pump Installation
  89. Water Outlet Installation
  90. Oil Level Indicator and Tube Installation
  91. Drive Belt Tensioner Bracket Installation
  92. Engine Flywheel Installation