Heater Core: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| Main Unit | 2.0 | 1.0 | B | |
| NOTE | ||||
| To Pressure Test Core, Add | 0.4 | 0.3 | B | |
| Auxiliary Unit | 2.1 | 1.7 | B | |
| NOTE | ||||
| To Pressure Test Core, Add | 0.4 | 0.3 | B | |
| With 3RD Row Seat, Add | 0.1 | 0.1 | B | |
| With 4RD Row Seat, Add | 0.1 | 0.1 | B |