If your 2006 Chevrolet Uplander has a tow package connector behind the rear driver's side trim panel then Curt harness # 56077 is the correct wiring harness. It sounds like you have checked and have no such connector. If there is no tow package connector there then you can still install Tow Ready 4-Pole Harness # 118396 which will instead plug in behind each of the two taillight assemblies.
The linked video shows this harness installed in a 2006 Uplander like yours. view full answer...
Yes, we have hardware kits available for all of the hitches we carry. Just put # RHK, replacement hardware kit, in the search box, then add your hitch part number and the manufacturer to the boxes on the product page and you will receive all of the installation hardware needed for the hitch.
At this time we do not sell individual hardware parts for liability reasons. Hitch installation hardware is torqued to fit and is designed for a single installation only, so replacement hardware is... view full answer...