spray some carb cleaner into the air filter housing and turn it over, if it makes an attempt, it is probably the PATS (passive anti-theft system) Is the light flashing very fast in the cluster? If so it will be the PATS for sure. Do you have another key? try the other key. If the other key doesn't work it will be the transceiver for the PATS.
There is no way to bypass the PATS system. Once it is enabled, it shuts the fuel system down.
Do you have a remote start in the truck?