1994 GMC Jimmy Owner's Manual - Page 260

NOTICE: If you use an improper coolant your engine could mix, overheat and be badly damaged. The repair wouldn't be covered by cost your warranty.Too much waterin themix can freezeand crack the engine, radiator, heater core and other parts. Some conditions, such as air trapped the cooling system, can affect the in coolant level in the radiator. Check the coolant level the engine is cold when and follow the steps under "Adding Coolant" the properway to add for coolant. If you have to add coolant more than four times a year, have your dealer check your cooling system. I NOTICE: If you use the propercoolant, you don't have toadd extra inhibitors oradditives which claim to improve the system. These can be harmful. Adding Coolant To Check Coolant When your engine is cold, the coolant level should berCADb,'f a little at or higher. When your engine is warm, the level should be up "FULL HOT," to or a little higher. I i 1 6-24