Pontiac Montana (USA / CAN)
Transfer case fluid capacity & service interval
Pontiac Montana (USA / CAN) uses transfer case fluid with a capacity defined as fill up to lower edge of level plug opening. Service intervals include normal use. The data covers 3 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Montana 3.9 SV6 E85 (CAN) (2007-2009) |
|
| Montana 3.5 SV6 (2005-2006) |
|
| Montana 3.9 SV6 (2005-2009) |
|
Additional Notes
- Across all three configurations of the Pontiac Montana (USA / CAN) covered here, the transfer case fill method is position-based rather than volume-based, meaning fluid is added until it reaches the lower edge of the level plug opening.
- A position-based fill specification of this kind means no fixed fluid volume is stated, as the level plug opening itself serves as the reference point for a correct fill.
- The 3.5 SV6 variant carries a model year span of 2005-2006, while the 3.9 SV6 spans 2005-2009, reflecting a longer production run for the larger displacement engine in the Montana lineup.
- The 3.9 SV6 E85 configuration is exclusive to the Canadian market and covers 2007-2009, distinguishing a flex-fuel variant that shares the same transfer case fill specification as the standard 3.9 SV6.
- All three configurations list normal as the use condition tied to the fill-to-plug-opening specification, indicating the stated procedure applies under standard operating conditions.