ok, so recently I just had the pcm replaced for just under $1000. The following week the evap canister fails. Gm wants $500 to replace it. I don't think so. Now my wife says she smells something hot in the cabin. So the question is could this possibly have anything to do with the evap canister which I highly doubt or just a really crappy car that falls apart at 80,000 miles? Any thoughts?