Its for sure a 2003-2006 Chevrolet Silverado. Note the hood design, and door trim, neither were used on the GMC version, especially the hood. It won’t align properly at the front because the Chevy and GMC had different front end sheet metal with different headlamps and so forth.

The wheels could be off of a GMC or the center caps were swapped. Easy to do.

I even considered the possibilty it said "Schneider's" on there. Dan Schnieder loves to put his name on background scenes and labels.

I think I'll just upload this as the 2002-2007 GMC Sierra Extended cab that it is, and worry about those other oddities some other time.

Here are some views. It looks like it says "HAMILTON," but I couldn't find and GMC/Chevy edition or custom shop/builder with that name.

well it is definitely a GMC , see the hub cap but the door badge does look unusual


this truck has an odd tailgate, maybe it is some tuner edition??

The most recent episode of the Nickelodeon sitcom Victorious (2010) contains a background GM pickup. Originally I suspected it was a Chevrolet Silverado, but that lettering on the door doesn't look right. To be on the safe side, I named the image a GMC Sierra, but I have doubts about that too.

Unfortunatley, when I downloaded the image from a fansite, the lettering came out blurry, but you can see it's an atypical cowl insignia.