Part number: GM3010420 2002-2008 Chevrolet Trailblazer This radiator has been tested for dimensions, composition, corrosion resistance and heat exchange. The radiator?áhelps keep your vehicle cool. Venting the heat away from engine parts is important to prevent damage. Direct fit at low cost and reliable with premium quality. Eliminate the overburdened intermediary costs by connecting manufacturers to consumers and provide the parts you need at the price you want. We bring the parts to your door.