And apparently the Denali running boards are redonkulously expensive to buy from the dealer (I've hear around $2000), and very tough to find used or in junk yards. So I just ordered up a set of these from wingzexpress. They look very similar to the Denali ones, but 1/4 of the price, and they come painted to match the truck
Here's an example of what they look like on a Trailblazer
