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

6T70/6T75 - Automatic Transmission (M7U, M7V, M7W)

1. Torque Converter Removal
2. Control Valve Body Assembly Removal
3. Case Cover and 3-5-Reverse and 4-5-6 Clutch Housing Removal
4. Reaction Carrier Hub and 2-6 Clutch Plate Removal
5. Input, Reaction, and Output Carrier Removal
6. Low and Reverse Clutch Plate Removal
7. Low and Reverse Clutch and 1-2-3-4 Clutch Plate Removal
8. Torque Converter and Differential Housing, Front Differential Transfer Drive Gear, and Front Differential Carrier Removal
9. Fluid Trough Removal
10. Manual Shift Detent Lever with Shaft Position Switch Assembly and Park Pawl Actuator Removal
11. Manual Shift Shaft Seal Replacement
12. Front Wheel Drive Shaft Seal Replacement - Case Side
13. Front Differential Carrier Bearing Cup Replacement - Case Side
14. Front Differential Drive Pinion Gear Bearing Cup and Lubricant Dam Replacement
15. Transmission Case Cleaning and Inspection
16. Manual Shift Detent Lever with Shaft Position Switch Assembly and Park Pawl Actuator Installation
17. Fluid Trough Installation
18. Torque Converter and Differential Housing Assembly Disassemble
19. Front Differential Carrier Bearing Cup and Washer Replacement - Torque Converter Housing Side
20. Front Differential Drive Pinion Bearing Cup, Washer, and Lubricant Dam Replacement - Torque Converter Housing Side
21. Front Wheel Drive Shaft Seal Replacement - Torque Converter Housing Side
22. Torque Converter Housing Cleaning and Inspection
23. Torque Converter Fluid Seal Replacement
24. Front Differential Transfer Drive Gear Support Assembly Disassemble
25. Front Differential Transfer Drive Gear Support Assembly Assemble
26. Transmission Fluid Pump Cleaning and Inspection
27. Front Differential Drive Pinion Gear Bearing Thrust Washer and Front Differential Bearing Washer Measurement
28. Torque Converter and Differential Housing Assembly Assemble
29. Front Differential Drive Pinion Gear Bearing Replacement
30. Front Differential Carrier Bearing Replacement
31. Front Differential Carrier Cleaning and Inspection
32. Front Differential Drive Pinion Gear and Carrier Installation
33. Torque Converter and Differential Housing Installation
34. Front Differential Carrier Preliminary Rotational Torque Measurement
35. 1-2-3-4 Clutch Plate and Low and Reverse Clutch Installation
36. Reaction Carrier Cleaning and Inspection
37. Output Carrier Cleaning and Inspection
38. Input, Reaction, and Output Carrier Installation
39. 2-6 Clutch Plate Installation
40. 3-5-Reverse and 4-5-6 Clutch Housing Disassemble
41. 3-5-Reverse and 4-5-6 Clutch Housing Assemble
42. 3-5-Reverse and 4-5-6 Clutch Housing Installation
43. Case Cover Assembly Disassemble
44. Case Cover Assembly Assemble
45. Case Cover Assembly Installation
46. Front Differential Carrier Final Rotational Torque Measurement
47. Control Valve Body Assembly Disassemble
48. Control Valve Lower Body Assembly Cleaning and Inspection
49. Control Valve Upper Body Assembly Cleaning and Inspection
50. Control Valve Channel Plate Cleaning and Inspection
51. Control Valve Body Assembly Assemble
52. Control Valve Body Assembly Installation
53. Torque Converter Installation
54. Lift Plate and Holding Fixture Removal