I have a grand am and I have the same issues with the trunk. No issues with the locks though. I always have problems with the window. When I pulled my panel off from the issues I found condensation behind the water shield. It settles on the trunk switch and other wires. I replaced the fuses and it didn't fix anything, just like you did. I'm wondering if you may have the same issue with water. I don't have power seats. Oh also my alarm shorted as well and some other things. I think a surge when threw and blew something other than the fuses out. N-Bodies are the biggest piece of crap car I've driven. What a joke. The engine and trans have been fantastic but suspension, body, and electrical is all garbage.
