just be careful removing the pillar trim. it is east to break the mounting tabs on those. Seat removal sounds about right as described about. 2 15mm bolts if I recall correctly, and two 18/19mm nut thingies on the sides that I used an open ended cresent wrench for. Oh, there are two plastic pushpins on either side of the passthrough that need to be removed two. can access from trunk or reaching in the passthrough. Halfway down it on either side. I forgot these when I tried and for 15 minutes I tried getting the seat out. then I remembered. with the rear deck, make sure to disconnect the tweeters if you have them before removing it. lastly, it might need to be wiggled out as they can be in there good.
2007 Saturn Aura XR | 1970 Chevy Blazer 4x4 | 1970 GMC 3/4 Suburban 4x4