[gto70]

I fired up the car recently and took it out for a drive (first time since December), and the transmission wouldn't hold low gear and then began to slip. I turned around and limped it home only to discover that the line to the vacuum modulator had fallen off. I reconnected it and took it out for a test drive and everything appeared fine. Well drove it again the other day and the trans. would not hold low gear again-it shifted into second by itself. Not only that, but when I use the 'His' part of the His/Hers shifter, the car begins to shudder in first gear. The trans. is a T-400 that was rebuilt about 1 year ago by ATI. Any suggestions? Could I have damaged the trans. by driving without the modulator hooked for about 2 blocks? Could it just be the modulator not working correctly? Thanx for your help!