* 17.2 gallons: This was the more common size.
* 20 gallons: Some models, possibly those with specific options or trim levels, had a larger 20-gallon tank.
To know for sure what size tank *your* 2009 Dodge Grand Caravan has, check the sticker located inside the driver's side doorjamb. This sticker lists the vehicle's specifications, including fuel tank capacity.
