1995 GMC Jimmy Owner's Manual - Page 263

Adding Coolant To Check Coolant When your engine is cold, the coolant level should be at ADD, or a little higher. When your engine is warm, the level should be upto FULL HOT, or a little higher. To Add Coolant If you need more coolant, add the proper mix the coolant recovery tank. at Add coolant mix at the recovery tank, but be careful not to spill it. 6-23