The GMC NBS (New Body Style) truck lineup was built in the early 2000s. They are differentiated from other GMC models by their boxy appearance and huge, rectangular headlights. The NBS trucks were manufactured from 1999 to 2007, after which the NNBS (Next New Body Style) trucks were introduced.
The primary distinction between NBS and NNBS trucks is their design. The NBS trucks have a traditional, boxy shape, whereas the NNBS trucks have a more contemporary, streamlined appearance. In addition, the NBS trucks have larger, rectangular headlights and squared-off wheel arches, but the NNBS trucks have rounded features and thinner headlights.
The two models differ significantly in appearance. One glance is sufficient to distinguish between a 2007 NBS and a 2007 NNBS. For instance, the 2007 NBS will resemble the 2007 Sierra classic or Silverado classic, indicating that it is a holdover from the NBS before GMC went on to the NNBS.
Despite this being an older discussion, it is still pertinent to explore the distinctions between NBS and NNBS trucks. Due to the age of the thread, you may not obtain a response, so you may need to restart an old thread to find an answer.