Window regulator
 

Just replaced the passenger side window regulator. Zip corvette has them for 149.00. About half what OEM costs. Took about an hour and is pretty straightforward. One note: make sure to set the window stops working on the new regulator to the same distance as the old one. It will save you a lot of time in adjustments.
If your window doesn't seal correctly, has wind noise and such set them higher. Set mine to the same measurement as the old ones plus an 1/8th inch higher, and the window seals better than before.
:seasix:

Amazon has them for under 100.00 .