Colorado Tailgate dampening

[Bluemoo]

2018 Colorado purchased without tailgate dampening. Anyone have experience with getting this installed either through a dealer or aftermarket EZ lift product? ( I haven't seen a compatible lift, i.e., Dee Dee).

[OldChevyNut]

Take it back to the dealer. Either the torsion bar wasn't installed, or it was removed, or the bar wasn't connect to the interior flange of the tailgate. All Colorado and Canyon models have a dampened tailgate, even the cheapest work models.