Overhaul Procedure Steps

ENGINE OVERHAUL

NOTE: This article lists the sequential steps necessary to overhaul the engine.

^ For the specific step listed below, refer to that step under "Repair Instructions". Repair Instructions

1. Draining Fluids and Oil Filter Removal (LS3 or L99)
2. Crankshaft Balancer Removal (LSA)
3. Crankshaft Balancer Removal (LS3 or L99)
4. Engine Flywheel Removal (LSA)
5. Engine Flywheel Removal (LS3 or L99)
6. Automatic Transmission Flex Plate Removal
7. Clutch Pilot Bearing Removal
8. Oil Level Indicator and Tube Removal (LSA)
9. Oil Level Indicator and Tube Removal (LS3 or L99)
10. Exhaust Manifold Removal - Left Side (LSA)
11. Exhaust Manifold Removal - Left Side (LS3 or L99)
12. Exhaust Manifold Removal - Right Side (LS3 or L99)
13. Exhaust Manifold Removal - Right Side (LSA)
14. Water Pump Removal
15. Throttle Body Assembly Removal (LSA)
16. Throttle Body Assembly Removal (LS3 or L99)
17. Fuel Rail and Injectors Removal (LS3)
18. Fuel Rail and Injectors Removal (LS3 or L99)
19. Intake Manifold Removal
20. Supercharger Removal
21. Engine Coolant Air Bleed Pipe and Hole Cover Removal (LSA)
22. Engine Coolant Air Bleed Pipe and Hole Cover Removal (LS3 or L99)
23. Engine Block Valley Cover Removal (LS3 or LSA)
24. Valve Lifter Oil Manifold Removal
25. Valve Lifter Oil Filter Removal
26. Valve Rocker Arm Cover Removal - Left Side (LS3 or L99)
27. Valve Rocker Arm Cover Removal - Left Side (LSA)
28. Valve Rocker Arm Cover Removal - Right Side (LS3 or L99)
29. Valve Rocker Arm Cover Removal - Right Side (LSA)
30. Valve Rocker Arm and Push Rod Removal
31. Cylinder Head Removal - Left Side
32. Cylinder Head Removal - Right Side
33. Valve Lifter Removal (LS3 or LSA)
34. Valve Lifter Removal (L99)
35. Engine Oil Cooler Removal
36. Oil Filter Removal
37. Oil Pan Removal
38. Engine Front Cover Removal (LS3 or LSA)
39. Engine Front Cover Removal (L99)
40. Crankshaft Rear Oil Seal Housing Removal
41. Oil Pump, Screen and Crankshaft Oil Deflector Removal
42. Timing Chain and Sprocket Removal
43. Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Removal
44. Camshaft Removal
45. Piston, Connecting Rod, and Bearing Removal
46. Crankshaft and Bearing Removal
47. Engine Block Plug Removal (LSA)
48. Engine Block Plug Removal (LS3 or L99)
49. Engine Block Cleaning and Inspection
50. Cylinder Boring and Honing
51. Crankshaft and Bearing Cleaning and Inspection (LS3 or L99)
52. Crankshaft and Bearing Cleaning and Inspection (LSA)
53. Crankshaft Balancer Cleaning and Inspection
54. Engine Flywheel Cleaning and Inspection (LS3 or L99)
55. Engine Flywheel Cleaning and Inspection (LSA)
56. Automatic Transmission Flex Plate Cleaning and Inspection
57. Piston and Connecting Rod Disassemble
58. Piston, Connecting Rod, and Bearing Cleaning and Inspection
59. Piston and Connecting Rod Assemble
60. Camshaft Bearing Removal
61. Camshaft and Bearings Cleaning and Inspection (without variable valve timing)
62. Camshaft and Bearings Cleaning and Inspection (with variable valve timing)
63. Camshaft Bearing Installation
64. Camshaft Timing Chain and Sprocket Cleaning and Inspection (LS3 or L99)
65. Camshaft Timing Chain and Sprocket Cleaning and Inspection (LSA)
66. Camshaft Position Actuator Cleaning and Inspection
67. Camshaft Position Actuator Magnet Cleaning and Inspection
68. Camshaft Position Actuator Solenoid Valve Inspection (Off-Vehicle)
69. Camshaft Position Actuator Solenoid Valve Inspection (On-Vehicle)
70. Valve Rocker Arm and Push Rod Cleaning and Inspection
71. Valve Lifter and Guide Cleaning and Inspection
72. Cylinder Head Disassemble
73. Cylinder Head Cleaning and Inspection
74. Valve Guide Reaming, and Valve and Seat Grinding
75. Cylinder Head Assemble
76. Oil Pump Disassemble
77. Oil Pump Cleaning and Inspection (LSA)
78. Oil Pump Cleaning and Inspection (LS3 or L99)
79. Oil Pump Assemble (LSA)
80. Oil Pump Assemble (LS3 or L99)
81. Piston Oil Nozzle Cleaning and Inspection
82. Engine Front Cover Cleaning and Inspection (LS3 or LSA)
83. Engine Front Cover Cleaning and Inspection (L99)
84. Crankshaft Rear Oil Seal Housing Cleaning and Inspection
85. Engine Block Valley Cover Cleaning and Inspection
86. Valve Lifter Oil Manifold Cleaning and Inspection
87. Valve Rocker Arm Cover Cleaning and Inspection
88. Oil Pan Cleaning and Inspection (LSA)
89. Oil Pan Cleaning and Inspection (LS3 or L99)
90. Engine Oil Cooler Disassemble
91. Engine Oil Cooler Cleaning and Inspection
92. Engine Oil Cooler Assemble
93. Intake Manifold Cleaning and Inspection
94. Supercharger Disassemble
95. Supercharger Cleaning and Inspection
96. Supercharger Assemble
97. Exhaust Manifold Cleaning and Inspection
98. Engine Coolant Air Bleed Pipe and Hole Cover Cleaning and Inspection
99. Water Pump Cleaning and Inspection
100. Thread Repair
101. Service Prior to Assembly
102. Engine Block Plug Installation (LSA)
103. Engine Block Plug Installation (LS3 or L99)
104. Crankshaft and Bearing Installation
105. Piston, Connecting Rod, and Bearing Installation
106. Camshaft Installation (LSA)
107. Camshaft Installation (LS3 or L99)
108. Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Installation
109. Timing Chain and Sprocket Installation
110. Oil Pump, Screen and Crankshaft Oil Deflector Installation
111. Crankshaft Rear Oil Seal Housing Installation
112. Crankshaft Rear Oil Seal Installation
113. Engine Front Cover Installation (without Camshaft Position Actuator)
114. Engine Front Cover Installation (with Camshaft Position Actuator)
115. Crankshaft Front Oil Seal Installation
116. Oil Pan Installation
117. Engine Oil Cooler Installation
118. Oil Filter Installation
119. Valve Lifter Installation (LS3 or LSA)
120. Valve Lifter Installation (L99)
121. Cylinder Head Installation - Left Side (LSA)
122. Cylinder Head Installation - Left Side (LS3 or L99)
123. Cylinder Head Installation - Right Side (LSA)
124. Cylinder Head Installation - Right Side (LS3 or L99)
125. Valve Rocker Arm and Push Rod Installation (LS3 or LSA)
126. Valve Rocker Arm and Push Rod Installation (L99)
127. Valve Rocker Arm Cover Installation - Left Side (LS3 or L99)
128. Valve Rocker Arm Cover Installation - Left Side (LSA)
129. Valve Rocker Arm Cover Installation - Right Side (LSA)
130. Valve Rocker Arm Cover Installation - Right Side (LS3 or L99)
131. Engine Block Valley Cover Installation (LS3 or LSA)
132. Valve Lifter Oil Filter Installation
133. Valve Lifter Oil Manifold Installation
134. Engine Coolant Air Bleed Pipe and Hole Cover Installation (LSA)
135. Engine Coolant Air Bleed Pipe and Hole Cover Installation (LS3 or L99)
136. Intake Manifold Installation
137. Supercharger Installation
138. Fuel Rail and Injectors Installation
139. Throttle Body Assembly Installation (LSA)
140. Throttle Body Assembly Installation (LS3 or L99)
141. Water Pump Installation
142. Exhaust Manifold Installation - Left Side (LS3 or L99)
143. Exhaust Manifold Installation - Left Side (LSA)
144. Exhaust Manifold Installation - Right Side (LS3 or L99)
145. Exhaust Manifold Installation - Right Side (LSA)
146. Oil Level Indicator and Tube Installation (LS3 or L99)
147. Oil Level Indicator and Tube Installation (LSA)
148. Clutch Pilot Bearing Installation (Non-LS9)
149. Engine Flywheel Installation (LS3 or L99)
150. Engine Flywheel Installation (LSA)
151. Automatic Transmission Flex Plate Installation
152. Crankshaft Balancer Installation
153. Engine Prelubing (LS3 or L99)
154. Engine Prelubing (LSA)