Well, that may do it. I guess I was assuming that they'd be the standard 100k platinum plugs....kinda like I assumed that there would be child security locks on my rear doors...stupid GM.....
Air filter is a freshly recleaned and oiled used K&N drop in. All fluids are clean, cv axles look good. I figure it's time for the fuel filter to be changed, but that's all I was thinkin as far as regular maintenance...I'll look at the plug once the rain stops while I'm home....maybe this weekend.
I wouldn't say hilly/mountainous like you are probably thinkin that I'm doin switchbacks and all that every 5 minutes. It's relatively flat, probably no more than anywhere else in the country (and yes, I've been there).