Profile or Beam wiper blades

[Mossyoakglock]

What style of wiper came on the 2008 Silverado? Is it profile or beam? The owner's manual only lists the part number for the GM blades, not the style.

 

I went to RockAuto and they list profile, contour and beam style blades for the truck. I think they use beam style blades but I want to make sure.

 

Any particular brand that seems to be the best. RA.com has the Bosch, Anco, Trico and ACDelcos for a really good price.

 

Also, who makes the factory blade? Is it ACDelco? The manual does not list the ACDelco part number for the blades.

[doodeediddledodindee]

I use Trico NeoForm T162213 blade and they work a lot better than the factory blades