Chevrolet Repair: 2000 s10 pickup,starts but wontt stay running, chevy s10, s10 pickup

Question
I bought a 2000 chevy s10 at an insurance auction last year and it ran fine I let it sit till i could get the money for repairs and let the battery go dead. i tried to start it with a new battery. it starts every time but only runs for 1 or 2 seconds the shuts off  i can go though this 20 or 30 times till the battery gets weak. is there some kind of security or computer setting i can reset, please help.
                       Rick


Answer
Rick,

 Sounds like the Passlock is not recognizing the key or does not have that key learned.  Try the learning procedure:

1: Install Battery charger (learn time will take 600 seconds X3)
2: Insert key, turn to run position and let sit for no less than 600sec
3: Turn off
4: Repeat for a total of 3 cycles for BCM and PCM to recognize key

You could have it scanned for trouble codes with a TECH2 scan tool