* Chevrolet: A mass-market brand offering a wide range of vehicles.
* GMC: Focuses on trucks, SUVs, and vans, often with more upscale features than Chevrolet.
* Buick: A more luxury-oriented brand, primarily sold in North America and China.
* Cadillac: GM's luxury brand, competing with other established luxury marques.
While GM *owns* other brands (like Opel and Vauxhall in Europe, which are largely phased out), these are not currently considered actively marketed major brands under the GM umbrella in the same way as the four listed above.
