GM changed the harness in 1993 from a 12 pin to a 11 pin as they were experiencing a transmission leak. You can either replace the 93 harness with the old 12 pin harness or what is recommended ... buy a 4L80E transmission repair end for 1994-2002 vehicles ....runs about $50 from electronic advantage. See eBay. You have to cut the connector wiring harness and splice in the 11 pin connector... only cut one wire at a time....you will have one wire left over you just tape off. Make sure there are instructions included....you need the pin out.
Bill
