This is a great post. One of the most informative posts I have seen on this forum. Thanks for all your time it took to put this together.
Know a couple of 'burban owners that have had to go through this and the mandatory:
1. IM gaskets
2. Fuel pump
3. pot metal heater hose fitting on IM
4. wiper motor
5. AC Delco battery post failure
*'95(?) - '99 body style.