I was going to replace them all, but there was only ONE injector to be had within 100 miles of my house and I needed the truck running sooner rather than later. At least now I know how to do the job.
Troubleshot found the #1 cylinder fuel injector was bad. Had to pull the top portion of the intake manifold to access the fuel rail; wasn't too bad. But the new injector was hard to find. O'Reillys had one. Removed and replaced; ops cked good.
I actually found the fuse to be bad; changed it; not the interior light lights up when i press the buttons, but it still doesn't work. So I am a little further. I found the factory code on the white box under the top of the dash. Perhaps something is wrong behind the keypad?