2009 Buick LaCrosse Owner's Manual - Page 297

Checking Coolant The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant recovery tank. If the coolant inside the coolant recovery tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at or above the FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant at the coolant recovery tank, but be sure the cooling system is cool before this is done. The coolant recovery tank is located in the engine compartment toward the rear of the engine on the passenger side of the vehicle. When the engine is cold, the coolant level should be at the COLD FILL line or a little higher. The COLD FILL line is near the bottom of the recovery tank and has an arrow pointing down at it. How to Add Coolant to the Recovery Tank { CAUTION: You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine. Notice: This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged. If coolant is needed, add the proper DEX-COOL® coolant mixture at the coolant recovery tank. If your vehicle is equipped with the 5.3L engine the coolant recovery tank is located in the engine compartment toward the rear of the engine on the driver side of the vehicle See Engine Compartment Overview on page 5-12 for more information on location. 5-27