2007 Hummer H3 coolant capacity
The 2007 Hummer H3 holds about 10 to 14.3 quarts of coolant, depending on the engine - the full cooling-system capacity when cold.
Key takeaways
- The 2007 Hummer H3 holds about 10 to 14.3 quarts of coolant total, depending on engine.
- This is the full cooling-system fill with the engine cold.
- Refill to the marked level, and use the coolant type your owner's manual specifies.
| Engine | Capacity | Liters |
|---|---|---|
| 3.5 | 10 qt | 9.5 L |
| 5.3 V8 | 14.3 qt | 13.5 L |
When refilling, add coolant to the marked level rather than forcing in the full figure. Source.