Checking Coolant - GMC 2008 Yukon Owner's Manual

Checking Coolant

The coolant surge tank is located in the engine
compartment on the passenger's side of the vehicle.
See Engine Compartment Overview on page 5-14
for more information on location.
5-30
CAUTION:
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Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FULL
COLD mark.