I'm really leaning towards the truck being a 4-door GMC Sierra 1500 Z-71 2006 or so. The rounded front bumper has me convinced that its a mid-2000's model. The bumper became more squared on the more recent models.
Can't get my images to attach.
Yeah its so confusing. Whenever I type chevy z71 on google images, mostly chevrolet silverado 1500's, 2500's, 3500's come up, and GMC has a z-71 too? Are they just branches of the same company?