The 2004 Tundra is available with a fully extended cab, which I own. This model uses a different electronic/mechanical mechanism to shift gears than other models. With 1200 miles on the 2004 Tundra I realized there was a problem if you shift from overdrive to 3rd gear to slow down while going doan a hill, then shift back to overdrive, the transmission will fail to switch. There is a button you drpress on the steering shift knob that electronically shifts in and out of overdrive. If this button is briefly tapped to switch gears, this will cause the transmission not to shift back. Instead, it will reverse so that when the dash light says you are in overdrive you actually are in 3rd gear. When the light says are out of overdrive you are in overdrive. The dealer was able to replicate this problem. They checked with factory and there were no other incidents of this. The dealer did not know why they used a different shifting mechanism from one cab design to the other (extended). The service report was written and states this condition as being a normal operating condition at this time.

- Kent, WA, USA