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