LT1 OBDII Seed/Key Algorithm?

Anyone out there know anything about the seed/ key algorithm for the LT1 OBDII cars? My seed is $31, $67 and I can't figure out the key. I don't really want to send 65535 commands to try to unlock it.

Originally posted by '97 30th Anniversary Z/28
Anyone out there know anything about the seed/ key algorithm for the LT1 OBDII cars? My seed is $31, $67 and I can't figure out the key. I don't really want to send 65535 commands to try to unlock it.

Try over on the HP Tuners bulletin board. There were several threads over the pas year covering it. http://www.hptuners.com/forum/YaBB.pl

Yea, those guys tried to help me out, alas the LS1 based seed didn't work. :irk:

If you've got LT1_edit, maybe you can snoop the bus, and get it from that.