Well here is a link to my PB album with pictures of the rust I took note of today. For the most part it is just the rockers that are bad. There is a little on the tailgate and the lip of the hatch which I got open from the inspection panel(not sure why it is not working from the outside as nothing appears to be stuck). I have not tried to diagnose the passenger front door yet.
http://s1194.photobucket.com/user/in...brary/Suburban
Here is a picture of what I am told is the SPID:
Here is my nice blue bowtie:
