truck starts then dies

[rockin-b-farms]

2001 chevy 2500hd 8100 with allison shows security on display, truck starts then dies.

[Alltunedup]

Did you change keys?

Did a key get wrecked?

Try a different / spare key? I believe the keys have electronic BS in them that triggers the computer to either run or not run....

Take the key that you are using/not having luck with, and move it at least 100 feet away from the truck while you try the spare key......

[kw900]

sounds like crank positioning sensor 60 bucks:)