Can someone help me look up a GM part number? I ordered General Motors GM Accessories 84106508 Crew Cab 6-Inch Rectangular Assist Steps in Black.

When I received it, one of the plastic parts that covers the metal hanger that attaches to the truck had broken during shipment. I don't want to send the running boards back via Amazon, but I can't find how to order a replacement. Part number 22876253 from GM is marked on it but Google isn't helping me out much.

Can I order this part or set of covers from my dealership?

 

So I called the local dealership and the dealership farther away, that I trust the most.

They said according to the GM parts catalog, the "6" rectangular assist steps in black" are technically described as oval steps. With that, it seems that I need 22877889. The other dealer had 22913037. From what I can tell, they are all the same.

The dealer I trust gave me the PN of 22877889, but he said the computer didn't show a picture and it was a special order item, so if it's wrong - I'm stuck.

Can anyone confirm?

 

Dealership is not able to see the part number for the flat or oval running boards...just says "no serviceable". They found a cover on a different style, ordered it in and it is very different. Still no luck.