Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| 4 Speed - 4T80E | ||||
| Planetary Gear | ||||
| Hub | GMO | 8678084 | 73.23 | |
| Bearing | GMO | 8677884 | 15.95 | |
| Sun Gear | GMO | 8678083 | 229.25 | GMO | 8678076 | 49.02 |
| Reaction Carrier | GMO | 8681884 | 763.37 | |
| Thrust Bearing | GMO | 9436851 | 8.32 | GMO | 9436851 | 8.32 |
| Retaining Ring | GMO | 8678821 | 8.13 | GMO | 8677619 | 7.75 | GMO | 8678181 | 8.28 |
| Shell | GMO | 8678075 | 55.60 | |
| Input Carrier | GMO | 8681887 | 660.51 | |
| Shaft | GMO | 8678124 | 236.21 |