To be certain:
* Check your owner's manual: This is the best source for the location of any fuel system components specific to your truck's configuration (single vs. dual tanks).
* Look for fuel tank selection switches in the cab: This is usually a rotary dial or push-button switch near the instrument cluster or center console.
* Inspect the fuel lines and tank area: While less likely, a physical valve *might* exist near the fuel tanks under the truck but is uncommon on this model year. However, accessing this area requires caution and may necessitate professional assistance due to safety considerations.
If you are trying to determine how to switch between fuel tanks, focus on finding the electronic controls inside the cab rather than searching for a physical valve. If you're experiencing fuel issues, it's best to consult a mechanic to diagnose the problem rather than trying to find a non-existent valve.