1) Acadia company 2) Automotive initials 3) Automotive inits 4) Big initials in detroit 5) Big initials in trucks 6) Big name in trucks 7) Canyon maker 8) Canyon or Sierra 9) Canyon producer 10) Chevy sister make 11) Denali maker 12) Detroit-based SUV maker 13) Envoy initials 14) Envoy XL maker 15) Insignia on some trucks Found on https://www.crosswordclues.com/clue/gmc
[automobile] GMC, formally the GMC Division of General Motors LLC, is an American automobile division of the American manufacturer General Motors (GM) that primarily focuses on trucks and utility vehicles. GMC sells pickup and commercial trucks, buses, vans, military vehicles, and sport utility vehicles marketed in North America and the Mid... Found on http://en.wikipedia.org/wiki/GMC_(automobile)