Ok here is a very technical question, I put a 1991 Chevy TBI Vortec V8 in my wrangler. It came with a 2wd 700R4 trans, I got a Novak conversions adaptor to convert it to 4wd. When the trans shop removed the rear tail shaft off of the trans the speed sensor had to go. Now the Jeep has its speed sensor in the transfer case so I donít need this second one. The problem I am having is that now the check engine light is coming on with an error code of not reading the speed sensor. I have asked the Chevy dealer and the trans shop and they both say the computer does not use this sensor, so why would it come up with an error? If it does not use it how do I stop the check engine light from coming on?