The first GMC logo design was relatively simple but distinctive. The initials "GMC" are set in a circular emblem. The letters were in a beautiful regular script font, reflecting the fashion sense of the early 20th century. Even in the early days of the brand, the logo was a testament to the brand's commitment to quality and professionalism. Although relatively ornate compared to modern designs, it embodies the elegance and craftsmanship of the era, setting the stage for the brand's evolution over the decades into a symbol of rugged dependability and strength, with subsequent changes to the logo reflecting the shift in design and branding.

In 1947, GMC's logo was changed, with the rounded outer frame eliminated in favour of the striking 'GMC Trucks' lettering, a redesign that emphasised the rugged image and fitted perfectly with the brand's focus on trucks and commercial vehicles. The logo began with a typeface that would later become the brand's iconic image. The word "truck" was soon omitted, leaving only the GMC logo.

By 1960, the GMC badge received a replacement, which was simplified to leave only the letters GMC because the previous logo looked too complicated, a design shift that marked a departure from the more complex logos of previous decades and symbolised the brand's entry into a new era, with the overall shape of the logo being wider and appearing to be placed within a rectangular border.

For 1975, the GMC logo retained the iconic shape introduced in the 1960s, continuing to emphasise strength and reliability. However, there were subtle improvements to the design. The overall letters were widened and rendered white, appearing more contoured against the red background below, as GMC adapted its ability to stay true to its core logo while adapting to its evolving design sensibilities.

This time, the logo has been modified from the original by removing the box previously used to enclose the letters, leaving the three GMC letters neatly presented, still in red. A border has been added around each of the three striking red letters, but it is not obvious.

In 2014, GMC introduced a logo that maintained the iconic shield shape, preserving the brand's image of strength and dependability. However, the design received a contemporary makeover. The shield became more refined and three-dimensional, with sleek metallic accents that added a modern touch. The "GMC" typography at the center was embossed and made bolder, enhancing its prominence. This logo emphasized precision engineering and innovation, aligning with the brand's commitment to offering both power and sophistication.