The Cooling System allows the engine to maintain the correct working temperature.
2.2L L4 Engine shown, 2.0L L4 Engine similar
A. Electric Engine Cooling Fan B. Coolant Surge Tank and Pressure Cap
WARNING:
An electric engine cooling fan under the hood can
start up even when the engine is not running and
can cause injury. Keep hands, clothing, and tools
away from any underhood electric fan.
WARNING:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them. If you
do, you can be burned.
Do not run the engine if there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
Notice: Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner, at 50 000 km (30,000 miles) or 24 months, whichever occurs first. Any repairs would not be covered by the vehicle warranty.
Always use DEX-COOL® (silicate-free) coolant in the vehicle.
Chevrolet Cobalt Service & Repair Manual. Transmission Oil Cooler Line, Flush
Warning: Wear eye protection.
Wear standard industrial rubber gloves.
Warning: Keep lit cigarettes,
sparks, flames, and other ignition sources away from the area to prevent
the ignition of combustible liquids and gases. Keep a "Class B" fire
extinguisher ...