1993 Pontiac Grand Am Owner's Manual - Page 185
1993 Pontiac Grand Am Manual
Page 185 highlights
Problems on the Road Engine Overheating(CONT.) 3.Fill the coolant surge tank with the 2. Then keep turning the pressure cap, proper mix, up to FULL COLD, or and remove it. just above the small cylinder at the Once the pressurecap is off, look base of the opening. inside the surgetank opening and look for a small cylinder at the base of the opening. This should be covered with coolant. If the cylinder is uncovered, the coolant in your system is low. 4. With the coolant surgetank pressure cap off, start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine fan. By this time, the coolant level inside the coolant surgetank may be lower. If the level is lower, add more the of proper mix to the coolant surgetank until the level reaches F'ULL COLD, or just above the small cylinder at the base of the opening. , 184