You may need to look up window indexing.... That should fix your problem.Noticed this the other day. The pass. side window does not receed completely into the door. There's about a half inch sticking up, exposed. Tried the auto down vs. just down, no difference. Closes just fine. Has anyone noticed this on their C6.
Try doing the reset index sequence again:
Page 87, Corvette Owners Manual:
Turn on car
Make sure windows are rolled up
Hold both window switches up for 3 seconds
Hold both window switches up for an additional 3 seconds