The radiator for the GMC, B6000 is the biggest component of the engine's cooling system. Without the radiator, the engine will have no way to cool itself down. The radiator for the GMC, B6000 is a complex mechanism that is connected to hoses both at the top and bottom, which cycles water through out the engine to cool it down. It works by bringing water into the radiator from the engine through the top hose. Gravity allows the thinned out water to trickle through towards the bottom of the radiator, where the cooled water is returned to the engine. The water cools as it trickles down due to the air passing through the front of the car, or through the car's electric fan. The radiator for your GMC, B6000 requires maintenance from time to time. The connecting hoses need to be checked for wear, especially where the hoses are clamped to the radiator. The... View more radiator will also need to be flushed annually and replaced with new radiator fluid that is specified for use in the GMC, B6000. A high pressure flush will clean out any rust and other mineral deposits that may clog your radiator coils. View less
