Checking Coolant - Chevrolet 2009 Silverado Owner's Manual

Checking Coolant

The coolant surge tank is located in the engine
compartment on the passenger side of the vehicle.
See Engine Compartment Overview on page 5-14 for
more information on location.
The vehicle must be on a level surface when checking
the coolant level.
Check to see if coolant is visible in the coolant surge
tank. If the coolant inside the coolant surge 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 surge tank,
but be sure the cooling system is cool before this is done.
The coolant level should be at or above the FULL
COLD mark. If it is not, you may have a leak in the
cooling system.
If the vehicle has a low coolant sensor and the LOW
COOLANT LEVEL message comes on and stays on,
it means you are low on engine coolant. See "LOW
COOLANT LEVEL" under DIC Warnings and Messages
on page 3-66.
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