2008 GMC Acadia Owner's Manual - Page 337

Notice: If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost would not be covered by your warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core, and other parts. If coolant needs to be added more than four times a year, have your dealer/retailer check the cooling system. Notice: If you use extra inhibitors and/or additives in your vehicle's cooling system, you could damage your vehicle. Use only the proper mixture of the engine coolant listed in this manual for the cooling system. See Recommended Fluids and Lubricants on page 6-12 for more information. Checking Coolant The coolant recovery tank cap has this symbol on it. See Engine Compartment Overview on page 5-14 for more information on the location of the coolant recovery tank. The vehicle must be on a level surface when checking the coolant level. When the engine is cold, the coolant level should be at the FULL COLD line or a little higher. When the engine is warm, the level could be above the FULL COLD level. The FULL COLD line is marked on the coolant recovery tank. 5-23