GMC 2004 Envoy, Owner'S Manual, Page: 334 / 466

Checking Coolant
The engine coolant
recovery tank is in the
engine compartment
on the passenger’s side of
the vehicle. See Engine
Compartment Overview on
page 5-12 for more
information on location.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at FULL
COLD, or a little higher.
Adding Coolant
If you need more coolant, add the proper DEX-COOL
®
coolant mixture at the coolant recovery tank.
{
CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will
almost never have to add coolant at the
radiator. Never turn the radiator pressure
cap — even a little — when the engine and
radiator are hot.
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