GMC Duramax Diesel 2015 Owner's Manual page 99

10-20 Vehicle Care
Checking Coolant (Pickup Models)
The coolant surge tank is in the
engine compartment on the
passenger side of the vehicle. See
Engine Compartment Overview on
page 10-3 for location.
The coolant surge tank is divided
into two sides. The pressurized side
(engine side) should be completely
full, while the non-pressurized side
(fender side) will be significantly
lower, depending on the operating
temperature.
Warning
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
little when the engine and
radiator are hot.
The vehicle must be on a level
surface. When the engine is cold,
the coolant level should be at or
above the MIN mark.
Checking Coolant (Van Models)
even a
The coolant surge tank is near the
center of the engine compartment.
See Engine Compartment Overview
on page 10-3 for location.
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
Warning
(Continued)