Skip Shift

[vettn71]

I'm about to have my 1990 Z undergo the PV (Performance Verification) at the NCRS Texas Regional inthis month. Part of the procedure is to check the operation of the skip-shift feature. I had a Haibeck chip in it, which I've removed for judging, so fans and all will finction correctly. It doe snot appear, though that the skip-dhift is funtioning. I had the car in for service at a local Corvette shop here in Dallas and asked them to check to see if there was a bypass harness (skip-shift defeat cable) and they said there was not. Either they did not check it or something else is going on.

Two questions:
1. Where would the cable be located?
2. Is there anything else that would disable this function?

Thanks in advance

Jim