I have a set of bully ext. cab nerf bars that are black. I have them on my truck for about 6 months and took off when i installed my body lift. Here is a link to the site for pictures. Asking $150 obo. They where on my 05.

http://s208.photobucket.com/albums/bb150/hunt4game29/

 

will they fit an 03 gmc?

 

By what i could gather, they will fit model years 2000 thru 2006, so i would say yes.

 

Yes they will fit 2000 to 2006 maybe even some 1999 and as long as chevys and gmcs frames are the same then i would say yes they will fit.