Hummer H2 (USA / CAN)
Coolant capacity & service interval
Hummer H2 (USA / CAN) coolant capacity ranges from 14,6 to 16,3 liters. Service intervals include checks at 12500 km or 6 months and changes at 240000 km or 60 months. The data covers 3 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| H2 6.2 V8 Flex-power (2008-2010) |
|
| H2 6.2 V8 (2007-2010) |
|
| H2 6.0 V8 (2002-2007) |
|
Additional Notes
- The Hummer H2 6.0 V8, covering model years 2002-2007, carries a cooling system capacity of 16.3 liters, which is notably larger than the 14.6-liter figure associated with the later 6.2 V8 variants.
- The 1.7-liter difference in coolant capacity between the 6.0 V8 and the 6.2 V8 reflects a meaningful distinction in cooling system volume across the two engine generations, despite the larger displacement of the newer engine.
- Both the 6.2 V8 (2007-2010) and the 6.2 V8 Flex-power (2008-2010) share an identical cooling system capacity of 14.6 liters, indicating no variation in cooling system volume between the standard and flex-fuel versions of the same engine.
- Across all three configurations, the coolant check interval is set at 12,500 km or every 6 months under normal use conditions, whichever comes first.
- The coolant change interval is uniform across all listed configurations at 240,000 km or 60 months under normal use conditions, placing the drain-and-fill cycle on a 5-year or high-mileage schedule.
- A 60-month change interval tied to normal use conditions means the calendar-based threshold of 5 years can trigger a coolant change independently of mileage accumulation, which is relevant for lower-mileage vehicles.
- The 6-month check interval applied under normal use conditions across all configurations suggests coolant condition and level are monitored on a semi-annual basis well ahead of the long-term change schedule.