Hummer H3 coolant capacity
Total cooling-system coolant capacity for the Hummer H3, by generation and engine, in quarts and liters.
| Engine | Capacity | Liters |
|---|---|---|
| 3.5 | 10 qt | 9.5 L |
| 5.3 V8 | 14.3 qt | 13.5 L |
Capacity is the full cold-fill for the whole system. Top up to the marked level and use the coolant type specified in your owner's manual. Source.