Hummer H3 (USA / CAN)
Manual transmission fluid capacity & service interval
Hummer H3 (USA / CAN) manual transmission fluid has a capacity range of 2,4 to 2,5 liters. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| H3 3.7 (2007-2010) |
|
| H3 3.5 (2005-2007) |
|
Additional Notes
- The Hummer H3 3.5 carries a manual transmission fluid capacity of 2.5 liters, while the H3 3.7 requires a slightly smaller fill of 2.4 liters, reflecting a 0.1-liter difference between the two engine variants.
- Both capacity figures represent a service fill, meaning the amount of fluid needed when servicing the transmission without a full overhaul or complete disassembly of the unit.
- The 3.5-liter engine was paired with the manual transmission from 2005-2007, whereas the 3.7-liter engine carried the manual transmission specification from 2007-2010, with 2007 being a shared model year between the two configurations.
- Both the 3.5 and 3.7 variants list normal use as the applicable condition for the stated capacities, meaning the 2.5-liter and 2.4-liter figures are not adjusted for severe operating conditions in the available specifications.