2015 Buick Enclave Owner Manual - Page 269

10-14 Vehicle Care When the engine is hot, the level could be higher than the FULL COLD mark or the FULL COLD ISO symbol mark. If the coolant is below the FULL COLD mark or the FULL COLD ISO symbol mark when the engine is hot, there could be a leak in the cooling system. If the coolant is low, add the coolant or take the vehicle to your dealer for service. { Caution This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged. If recovery tank is empty, check the coolant level in the radiator before adding coolant to the recovery tank or take the vehicle to the dealer for service. See "How to Add Coolant to the Radiator" later in this section. If coolant is needed, add the proper DEX-COOL coolant mixture at the coolant recovery tank. How to Add Coolant to the Radiator { Warning Steam and scalding liquids from a hot cooling system can blow out and burn you badly. Never turn the cap when the cooling system, including the surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to cool. If coolant is needed, add the proper mixture directly to the radiator, but be sure the cooling system is cool before this is done. Then check the recovery tank and add coolant if needed. How to Add Coolant to the Recovery Tank { Warning 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.