The 1989 GMC Sierra 2500 is part of the truck's second generation. Available as a regular or extended cab, this rear-wheel drive pickup truck also offered four-wheel drive as an option. Powering the Sierra 2500 were several engine options, including a 5.0L V8, a 5.7L V8, and a 6.2L V8 diesel engine. These engines were mated to either manual or automatic transmissions. This model year's offerings were known for their rugged build and reliability, making them popular choices for work trucks as well as daily drivers. Despite the lack of modern day infotainment and technology options, the 1989 GMC Sierra 2500 remains a classic, highly valued for its durability and dependability.