Is a GMC truck just a dressed up Chevy truck?

yes, but not always the Advance design Chevy truck style of 1947-55 the GMC had its own engine I think it was a "Bigger six"
Back then and all the way up to the new century I thought the chevys looked better than the gmc`s, I own 2 GMC`s .

I get tired explaining to guys that the GMCs come down the line they split from the line and go up to the next level where the atmosphere totally changes, with classical music played, the employees are standing on red carpet. Champaign dispensers are located through out, and crates of lockwashers everywhere.

:lol: