Appreciate the input, gentlemen.
All topics I've found on the subject, end with the programmer being replaced. Except this one, where he replaces the caps. This however, did not solve it in my case.
http://www.corvetteforum.com/forums/...-repaired.html
Wouldn't a faulty sensor give the appropriate fault code?
I'll keep my eyes open for a 90-91 programmer.
Edit,
Rod, did you also have those dashes? I'll have to check the flap as well, just in case.