1995 GMC Jimmy Owner's Manual - Page 262

I NOTICE: If you use an improper coolant your engine could overheat mix, and be badly damaged. The repair wouldn't be covered by cost your warranty. Too much water in the can freeze and crack mix the engine, radiator, heater core and other parts. Some conditions, such asair trapped in the cooling system, can affect the coolant level in the radiator. Check the coolant when theengine is cold level and follow the steps under "Adding Coolant" the proper wayto 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 proper coolant, don't have toadd extra you inhibitors or additives which claim to improve the system. These can be harmful. 6-22