Since 1992, Honolulu Buick GMC has been Oahu’s source for new and used cars.When you visit our Honolulu Buick, GMC & Cadillac dealership for an exciting new Cadillac, Buick, or GMC to take for a spin around Honolulu or up the Nimitz Highway, you’ll find the vehicle with the features you need at a price you’ll love.