thanks guys!
I know it's alot of work and watched a video of how it's done, and it seems tedious, but I don't want to hear it from my wife anymore, and that time of year is coming( "it's freezing, I wish the seat warmers worked" ad nauseum)
I would also figure out which one is bad( by swapping one at a time) and then keep it out all together till I buy a new one. I found one for $100, but that's alot for a warm ass, so I figure the passenger can lose out till I decide it's worth it( next winter lol).
and as the parts go, ac Delco whenever they sell it.. rock auto is an awesome site for cheap parts!!
I love the red on the denali!!!