I read the file out of a 96 TA and it had 16230171 OS in it. Checking the VIN on tis2web this VIN should have had 16229933 OS.Checking quite a few 96 LT1 files I have and all the ones posted here I don't see 16230171 used in any of them. I'm pretty sure this PCM had the TA VIN put in it and that is why it was incorrect for this vehicle and not even sure is is a valid 96 OS. Does anyone have a 5.7L file that uses 16230171 or know what vehicle type and year it is a correct OS for?