1 generation 2004–2008 3.5 Hydra-Matic AWD LWB 2004 → 3.5 Hydra-Matic LWB 2004 → 3.9 Flex-Fuel Hydra-Matic LWB 2004 → 3.9 Flex-Fuel Hydra-Matic SWB 2004 → 3.9 Hydra-Matic LWB 2004 → 3.9 Hydra-Matic SWB 2004 →