Chevrolet Cobalt Service & Repair Manual: Compressor Service

Water Pump, Replace

1. Remove intake manifold cover. 2. Drain cooling system into suitable container. A drain plug is located at the bottom of water pump. ...

Clutch, Replace

1. Evacuate system as outlined under "Refrigerant Recovery" in "General Service" on main menu selection. 2. Raise and ...

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Chevrolet Cobalt Owners Manual. Gasoline Octane
If the vehicle has the 2.2L L4 engine (VIN Code 5), use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving. If this occurs, use a gasoline rated ...