Hello phillipshaw,
Great question! GM has four current brands: Chevrolet, GMC, Buick, and Cadillac. Buick and Cadillac are more geared towards the luxury segments, whereas Chevrolet and GMC offer very solid economy vehicles. The Chevrolet brand offers cars (like the Cruze, Sonic, Malibu, and Impala), crossovers and SUVs (Equinox, Traverse, Tahoe), as well as trucks (Avalanche and Silverado) and a passenger van (Express); GMC offers solely crossovers/SUVs (like the Acadia, Terrain, and Yukon), trucks (Sierra and Canyon), and a passenger van option (Savana). I would definitely recommend visiting the brand sites (buick.com; cadillac.com; chevrolet.com; gmc.com) to explore the different vehicles available.
I hope this helps to answer your question! If I can be of further assistance I'm happy to help.
Best,
Sarah
GM Customer Service