GMC is General Motor’s vans, SUVs, and trucks wing. The automaker provides more upscale features in its models as compared to its sibling Chevrolet models. Its reputation is driven by its full-sized pickup trucks packing luxury interiors followed by the SUVs sporting impressive performance specs in a market with stiff competition. Used GMCs sell due to the engineering marvel of GM. The vehicles are sturdy, voluminous, and reliable. Decade-old GMCs are known to hold onto their quality without any deterioration in powertrain capacity.