I found an old .cax file for the 4x4 Options. It was created by CC + M. I am assuming M is Mick. I don't know who CC is. Anyway---I take NO credit for
this. All I did was update it a bit and add this parameter for other years of LS1b PCM Operating Systems.
These "4x4 Options" .cax files are for the 2001-2007 LS1b PCMs. After these are installed you will find the parameter B9103. These .cax files allow
you to set the "4x4 Options" to 2wd or 4wd. This may come in handy for retrofit projects. I'm sure I don't have all of the operating systems covered
for those years but there are a total of 19 operating systems covered in these 7 .cax files. I didn't make any for the 1999 and 2000. I feel it is too
easy to upgrade those to the better 2002 operating system. Follow the directions in GMPX's sticky about .cax files for where to install them into the
software. Remember, If you already have .cax files that cover these O/S, you will have to add the contents of these into those folders. If you don't
already have any .cax files for these O/S, you will have to make duplicate copies of them and name them the number of the O/S that they correspond to.
zip file updated on 10-20-14
Jeff