I recently found and bought my (2nd) Avy, a 2013 Black Diamond with 135,000 km on it, and we're currently towing our 27' Airstream Argosy travel trailer around the southern States with it before we head home to Alberta. Love the truck, although not sure the truck loves the trailer sometimes as we keep getting phantom Check Engine light when towing that disappears a few miles after we unhook. But GM says there isn't an issue, so ... cool I guess. But to my question. I'm trying to find a tailgate assist accessory for it. I've read other links that say the Dee Zee 43101 works great on a '13 Avy, but Dee Zee replaced the DZ43101 last year with the DZ43102 and can't (or won't) tell me what changed. I tried going to eBay who seemed to have a DZ43101, but when I get into the order, it automatically changes the part number to 43301. So, I'd sure appreciate it if anyone can suggest how to get a good tailgate assist for a '13 Avy ?? Brujay.