Cooling System - GMC 2003 Envoy XL Owner's Manual

Cooling System
When you decide it's safe to lift the hood, here's what
you'll see:
L6 Engine
V8 Engine
A. Coolant Recovery Tank
B. Radiator Pressure Cap
C. Engine Fan
If the coolant inside the coolant recovery tank is boiling,
don't do anything else until it cools down. The vehicle
should be parked on a level surface.
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