GMC Sierra Denali Classic 2007, Owner'S Manual

Page: 349 / 502

Notice: If you use an improper coolant
mixture, your engine could overheat and be
badly damaged. The repair cost would not be
covered by your warranty. Too much water
in the mixture can freeze and crack the engine,
radiator, heater core, and other parts.
If you have to add coolant more than four times
a year, have your dealer check your cooling
system.
Notice: If you use extra inhibitors and/or
additives in your vehicle’s cooling system,
you could damage your vehicle. Use only the
proper mixture of the engine coolant listed
in this manual for the cooling system.
See
Recommended Fluids and Lubricants on
page 460 for more information.
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 334 for more information on location.
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CAUTION:
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.
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