The 95 CPI came with both flash (OBD1 1/2) and the chip version. The chip pcm is the same as the other 4L60E full size trucks. The mask is 8C and prom memcal # is 38. AL -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.diy-efi.org/pipermail/gmecm/attachments/20001127/4fc4f47f/attachment.html>