Differential: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| 4T45E | ||||
| Final Drive Assembly | 10.0 | 6.7 | A | |
| Final Drive Gear | 10.0 | 6.7 | A | |
| 4T65E | ||||
| Final Drive Assembly | 2.9 | 2.0 | A | |
| Final Drive Gear | ||||
| Internal Gear | 11.8 | 8.8 | A | |
| Sun Gear | 2.9 | 2.0 | A |