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. See Cooling System on page 10‑14 for more information.
The coolant recovery tank cap has this symbol on it.
When the engine is cold, the coolant level should be at or above the FULL COLD line marked on the recovery tank.
When the engine is hot, the level could be higher than the FULL COLD line. If the coolant is below the FULL COLD line 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 a dealer for service.
See also:
OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect
to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic
Services. See OnStar Overview on ...
Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when dri ...
Manual Operation
(Fan Control): Press these buttons to increase or decrease the fan speed.
Pressing either fan button while in automatic control places the fan under manual control. The fan setting remains displayed ...