As for your code problem Clear all of them and see what comes back or try leaving the positive off the battery overnight and see what codes come back it seems like youre PCM is either screwed up a loose connector to it or as mentioned above a ground was broken etc... try the easiest option first and work your way foward. Your rear shocks dont have a adjuster on top sounds like youre reffering to the actual strut mount itself. and as far as rebuilding the cost effectivness of shipping them to have them rebuilt should be around the same price to buy new ones. So if you think youre shocks are screwed just purchace new ones but bilsteins are firm shocks period.
THIS IS THE FACTORY GXP TIRE SIZE!
