1996 GMC Savana Van Owner's Manual - Page 206

k. ., . I 5. Put the capback on the coolant recovery tank, but leave the radiator pressure capoff. 6. Start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out forthe engine fan. 7. By this time the coolant level inside the radiator filler neck may be lower. If the level is lower, add more of the proper mix through the filler neck until the level reaches the base of the filler neck. 5-18