Overhaul Procedure Steps

NOTE: This article lists the sequential steps necessary to overhaul the transmission.
^ For the specific step listed below, refer to that step under "Repair Instructions". Repair Instructions


1. Torque Converter Removal and Holding Fixture Installation
2. Case Extension Assembly Removal
3. Transmission Fluid Pan, Filter and Electrical Connector Passage Sleeve Removal
4. Control Valve Body Assembly Removal
5. Torque Converter Housing with Fluid Pump Removal
6. 1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Removal (6L50/80/90)
7. Center Support, Output Carrier and Output Shaft Removal
8. Manual Shift Shaft and Parking System Components Overhaul (6L80/6L90)
9. Manual Shift Shaft Seal Replacement
10. Output Shaft Seal Replacement
11. Case Inspection
12. Output Shaft Disassemble
13. Output Internal Gear Disassemble (6L80/6L90)
14. Output Shaft Assemble
15. Output Carrier Assembly Overhaul
16. Output Carrier to Output Shaft Assemble
17. Output Carrier to Output Internal Gear Assemble (6L80/6L90)
18. 2-6 Clutch Overhaul (6L80)
19. Low and Reverse Clutch Overhaul (6L80)
20. Low and Reverse Clutch Backing Plate Retaining Ring Measurement
21. 4-5-6 Clutch Dampener Overhaul
22. 4-5-6 Clutch Overhaul (6L80/6L90)
23. 4-5-6 Clutch Backing Plate Retaining Ring Measurement
24. 1-2-3-4 and 3-5 Reverse Clutch Overhaul (6L50/6L80/6L90)
25. 1-2-3-4 Clutch Backing Plate Retaining Ring Measurement
26. 3-5 Reverse Clutch Backing Plate Retaining Ring Measurement
27. Torque Converter Housing with Fluid Pump Disassemble
28. Fluid Pump Cover Cleaning and Inspection
29. 1-2-3-4 and 3-5 Reverse Clutch Fluid Seal Ring Installation (6L80/6L90)
30. Torque Converter Housing Cleaning and Inspection
31. Torque Converter Fluid Seal Replacement
32. Transmission Fluid Cooler Pipe Seal Replacement
33. Fluid Pump Selective Measurement
34. Torque Converter Housing with Fluid Pump Assemble
35.Fluid Pump Cover Installation
36. Control Valve Body Assembly Disassemble
37. Control Valve Lower Body Assembly Cleaning and Inspection
38. Control Valve Upper Body Assembly Cleaning and Inspection
39. Control Valve Body Assembly Assemble
40. Center Support, Output Carrier and Output Shaft Installation
41. 1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Installation (6L80/6L90)
42. Torque Converter Housing with Fluid Pump Installation
43. Control Valve Body Assembly Installation
44. Automatic Transmission Electrical Connector Passage Sleeve Installation
45. Fluid Filter and Manual Shift Detent Assembly Installation
46. Transmission Fluid Pan Installation
47. Case Extension Assembly Installation
48. Torque Converter Installation and Holding Fixture Removal