Caution – GMC 2007 Sierra User Manual

Page 509

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A. Coolant Surge Tank

B. Coolant Surge Tank Pressure Cap

C. Engine Cooling Fan

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CAUTION:

An electric fan under the hood can start up
and injure you even when the engine is not
running. 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.
Check the coolant level after the system cools
down. Some amount of coolant may be lost due to
overheating.

All Other Engines

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