How do you replace a radiator on 2001 4.3 GMC sonoma?

To replace the radiator on a 2001 GMC Sonoma with a 4.3L engine, first, disconnect the negative battery terminal and drain the coolant by removing the lower radiator hose. Next, remove any necessary components such as the fan shroud and the upper and lower radiator hoses. Unbolt the radiator from its mounts, then lift it out and install the new radiator by reversing the steps. Finally, refill the coolant, reconnect the battery, and check for leaks.