Cooling System - GMC 2003 Sierra 1500 Pickup Owner's Manual

Cooling System
When you decide it's safe to lift the hood, here's what
you'll see:
8100 V8 Engines
All Other Engines
A. Coolant Surge Tank
6. Coolant Surge Tank Pressure Cap
C. Engine Fan
If the coolant inside the coolant surge 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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