In order to meet Federal glass retention requirements in RV, Motor Home or Bus windows, some series are constructed using metal glass clips on the straight sides of the stationary panes, with flexible vinyl in the radius corners. Over time, and with particularly flexible bus bodies, the interface between the metal clips and outside face of the glass may develop a squeak. The repair for this problem is to install a sound damper under the glass clips.
Complete the work on each clip before removing another.
Removing the Clip:
Carefully tap a stiff putty knife between the frame and the glass clip, using a mallet. Rotate the putty knife blade toward the center of the window, and work the full length of the glass clip free. Avoid bending the glass clip in the process of removal.
Install the Damper:
Cut a piece of 3/16ths" x 5/16ths" foam tape (available from most glass shops) to the length of the class clip. Using a mild cleaning solution, clean the back of the class clip and dry it. Peeling the back paper off the tape, roll it onto the back of the glass clip, set slightly back from the clip edge so that it does not show when the clip is re-installed.
Install the Clip:
Position the metal clip on the glass, next to its original location. Tap the clip back into place with a suitable non-marring (wood or plastic) block and the mallet.