Answer

Hi, my name is Tim, to replace the instument panel bulbs, the instrument cluster must be removed, I will post that procedure below. To flush the coolanton the olds, loosen the drain plug on the radiator and drain the coolant, i use prestone super flush, close the drain on the radiator, and add the flushing chemicals,and fill with water, start the vehicle and let run untill it has reached full temp, let the vehicle cool and open the radiator drain, and drain all the fluid out, then close the drain and fill with water. start the vehicle again and let it come to temp, let it cool and drain the radiator again, repeat this until the water is clear, then drain again, fill with 1.5 gallons of straight anti freeze, and top off with water, run vehicle to temp and check the level, add if neccessary,Tim