Thomas,

1. You've got all of this right. The only two questions are (and I do not have definite answers):
- What type of sealer to use? Most likely black RTV is very good. I used weatherstrip cement. Just be sure to clean up quickly and carefully.
- Should you seal inside the u-rubber that goes around the glass? I did not but I now think it would have been a good idea.

2. This is the complex part - I will have to study my Suburban before filling this part in.

- Metal stop clips are fine as shown.

- The vertical bar on the sliding window also has the pull handle (mine is not like yours - I have see GMC clips like your on 50/51 GMC Suburbans, so I suspect that the set-up changed by 1954). Your vertical bar/pull-handle is a better design than mine.

Do you have the old whisker out of the vertical bar? It took me between 4-6 hours of work on each bar to safely remove the old whisker. The metal backing of the whisker had rust-fused to the stainless steel.

Do you have replacement whiskers?

3. I recall that these strips screw in at the bottom as you describe. And then the interior garnish molding screws on (as described by you).

I'll try to add to this post on Saturday.

One other question: have you checked to see if the drain holes/tubes are cleared (inside the sidewalls, under each window opening)?

Tim