Updated 5/25/2019, moved all videos to Youtube as Weebly embedded videos play horribly.
Scroll down to section 2 for troubleshooting engine turning over but not firing up.
There are several common culprits of a no-start condition, each one will lead you down a different troubleshooting path. The path to starting, in a nutshell is:
Does the car recognize the ignition (the security is built into the barrel, not the key) if not, the LOCK symbol will light on the dash and it will not start. You will likely need the dealer or a tuner to remedy this.
Is the car in gear? No dash lights will show, you must be in Park or Neutral, dummy.
Turn the key 2 clicks from insert, no dash lights? Battery connections, Failed trace in fusebox. (Check battery, hit the fuse box a few times with an open palm with the key on and someone watching, does the dash react at all?) Otherwise, you may have a dead battery.
Turn the key to start, dash behaves normally, starter never engagaes. This could be a bad ignition barrel, Trace in the fusebox, Bad Starter solenoid or Starter. First troubleshoot is at the fusebox (Video Below) to pull the starter relay and manually engage the starter. If it turns over, Starter & solenoid are good, put the relay back in, have someone else turn the ignition to start, it the relay clicking? if so, definitely a bad relay (output contacts are toast), but if not it could still be the relay (bad coil) swap it with the one next to it that looks exactly like it, it goes in either way (only 4 pins) and is correct either way. Retest. If same result, relay is OK and you very likely have a bad ignition barrel.
The most common failures are Ignition barrel, Broken trace in fusebox, Battery terminals/connection corroded, Starter solenoid or starter itself. If the starter makes noise but never turns the engine, start there (unless the battery is weak, turn on the headlights? Do they seriously dim while you start the truck? Battery) The video below will tell you whether you need to get on your back and wrestle with the starter.
SECTION 2: Everything above is if the engine does not even turn over with the key, the next segment, is it turns over but does not start.
There is yet another trace that can break in the fusebox which will cause the condition described int he video above, after you've confirmed it, you need to remove the fusebox, take a picture of the fuse/relay layout, pull all fuses/relays, punch through the 4 bolt bounts from the bottom (screwdriver and a hammer work) then split the fusebox in half.
Now you can see the copper 14 gauge traces, they will likely "look" just fine, take a pick tool and lift on each side of the copper at each and every 90 degree bend, that's always where the break is, and it's usually on an outside piece.
When you find it, break out the soldering iron and solder them back together. Reassemble and reinstall. You're done!
Below, I posted the entire interaction with another TBSS owner who was troubleshooting the problem, have a read!