[JohnIL]

Thank you all for the responses. I'll do my best to answer your questions.

The transmission is a 1991, according to the stamping number.

Fluid level is full and we reset the TV cable.

I ordered a new corvette servo, seals, and pin.

I'm afraid I can't give confident answers to the manual shifting questions because I only drove it once, and I was concentrating on up shifts at the time. I did attempt to manually downshift from 4 to 3 to 2, but I was at low enough speed that it was difficult to fell the downshifts.

Tonight, we will try to do some more scientific testing. We will install a temporary tach so we can keep an eye on RPM's to confirm shifts. Then, we'll manually run it up and down through the gears to see what works and what doesn't. I'll report back with test results.

Thanks again for your help.

John