I have a tow bar base plate for a 2002-2008 GMC Envoy. DEMCO Model #9517119. I have the mounting hardware with it. Somewhere if I can find them I also have a braking device and other parts that were used when towing it. I'll sell the base plate for $150 or BEST OFFER. If you need some other parts let me know and I will try to find them. I would assume this probably fits a Chevy Trailblazer as well but I don't know that for a fact. I also like trades (like guns and ammo). Thanks for looking. Please call or text 501-250-5784 in Greers Ferry, Arkansas.