​​​​​​​91 Convertible, purchased from a "Little Ole Lady" who only drove it to church. Got it home, checked the tranny fluid, nothing showing on the stick. Added a pint at a time, until it showed on the dipstick. Three and a half quarts to bring it to normal.
Drove a few miles around town, then the white smoke appeared. Only seemed to leak when speed allowed 3-4th gear.
Long story short, the point of the leak has been determined to originate at the servo cap. Closer inspection by my, soon to be, new best mechanic, revealed that the servo cap was not seated and definitely not secured properly by the clip. In fact it is sitting at an angle and pretty well stuck in that position. Attempts to re-seat it are very much hampered by its location, so close to exhaust pipe.
We are going to attemp to remove the cap and I'm planning to put in a new servo kit and cap. Questions I have are, just how much disassembly is required to access these parts? Also, what is the best kit to install? Has anyone done this without dropping the tranny? Or is that not possible?

I've ordered a Servo Kit from Global Transmission online. The kit comes with a new cap, which may come in handy if I mangle the old one trying to to remove it in the close quarters.

I luckily, have a great shop locally where the owner has owned the same model since new. He has a 30 year relationship with a tranny shop near also. I too have fingers crossed that there is no damage to 4th gear. I'm tempted to just go direct to the tranny shop to see if they can get the cap reinstalled, since they likely have all the tools and experience with this particular tranny.

Very interesting finds during the servo replacement. I'll post pics, etc if anyone wants to see what mangled parts came out of it.
Amazing it shifted at all, in my opinion.
Wow, this thing is really fun to drive! I've learned a ton about this car in the past week or so, thanks to the forum members here.
I've also been fortunate to find an honest repair shop, just down the street from me here in Key Largo. The shop owner has owned more than a few Vettes.
I know exactly where to go for help locally now, and can recommend Bob's shop from experience.

Here’s a few picks of the servo component removed yesterday. Second Pin, furthest from the camera, appearing in the photo above was the one removed. The Pin appearing below it, was the new one installed.
Obviously extruded O’ring was found on the 4th piston.

Interestingly, no springs were found on the old servo that was removed.

Was told that PO, who's owned it 10 years, had tranny rebuilt. Might just have been a hack job on the servo.