GMC introduced the Yukon in 1992, the same year tat the Chevrolet Tahoe first appeared. Even though it was based off the larger Chevrolet Suburban , the Yukon was smaller. For the first two years of production, the Yukon was a two-door SUV; a four-door variant was added in 1994. In 1997, the two-door variant was officially discontinued. To distinguish it more from the Tahoe, GMC added the Denali trim level in 1999 as a more upscale entry. A -liter V-8 was standard on the first-generation Yukon and could be paired to a four-speed automatic or five-speed manual transmission.