I got the number 1657 (ODMB Output 7 Cicuit Faulty). Could someone point me in the right direction.

 

You can't use a "generic" code list. Use the one the Shoebox has on his web page, specifically for LT1's:

http://shbox.com/1/Dtcs.htm

P1657 = Skip shift/One to four upshift system control circuit

Your Skip Shift solenoid is not working, or someone pulled the harness connector off the solenoid to defeat the skip shift feature. If you want to keep skip shift deactivated, put a 2Kohm resistor (50-cents) across the harness connector pins, or buy a "Skip Shift Eliminator" ($30).

 

thanks for the link and the help. I was hoping that was the one. The resistor I had in there must of came loose.