On my '93 4-Door cavalier RS, there is a hole at the rear of the driver side window, near the top, where a rivet attached a slider that runs in a track has broken and the window has flopped down at an angle into the door. It looks like this is a critical piece that holds the window in the track. Does anyone know if there is a replacement part, or if anyone has come up with a fix for this? Your input is much appreciated!

 

Found it! Turns out that it is a common part, Rockauto has it for about $2.85, but I'm getting it from Autozone for $6.