GM Chevrolet Avalanche - Manual (Page 367)

A. Coolant Surge Tank
B. Coolant Surge Tank Pressure Cap
C. Engine-Driven Cooling Fan
{ CAUTION:
An electric engine cooling fan under the hood
can start up even when the engine is not
running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
If the coolant inside the coolant surge tank is boiling, do
not do anything else until it cools down. The vehicle
should be parked on a level surface.
8100 V8 Engine
5-33