I rely on this site a whole lot for the mechanical side of things so I here is me trying to pay it back even a little. My trailblazer has 215k and use to be a rental car so its seen a lot of use. I used Zep degreaser mixed with water and it worked well on the leather and plastic, still need to try to carpet with a shop vac and heavy scrubbing. I'll post more later if wanted as my interior is so filthy and it's still in the works