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