Where do you find the value of a 1988 GMC Sierra?

Two reputable resources for determining the value of a 1988 GMC Sierra are the NADA Used Car Value Guides and the Kelley Blue Book. Each of these calculates the approximate value of most vehicles based on the age, drive train and mileage of the vehicle.

These resources produce a range of prices based on the information provided to provide an idea of the approximate worth of a vehicle based on its condition. As of 2016, the NADA guide sets the approximate value of a 1988 GMC Sierra in good condition with a six-cylinder engine at approximately $3,000 while one in poor condition is valued at approximately $1,300.