Replaced A50, reprogram issues

[fjcruiser]

Hello all,

Had to replace the a50 tcm and bought a new AC delco one popped it in and figured I could use my v2 to program the vin. No such luck! I read the controller and edited the vin in the v8 software then reflashed it, still P0602 . So I tried using 7.5 scan and changed the vin under bidirectional, it successfully changed vin but I'm still getting the P0602 and generic tcm mil request .

Any advice from the a50 pros ? Not feasible to visit the dealer for me

2011 Chevy Silverado 2500

[fjcruiser]

I believe i found the issue, my original tcm OS was 24256861 and the replacement is 24256581, so does anyone happen to have a 24256861 OS i could have ??? Thanks


-- Got a different OS and reflashed the controller and all is well again