Chevrolet Cobalt Service & Repair Manual: Ignition Systems

Precautions

Air Bag Systems Refer to "Air Bag System Precautions" on main menu selection for "Precautions." Battery Ground Cable Prior to service, disconnect battery ...

Description

This ignition system uses one coil for each pair of cylinders. Each pair of cylinders that are at Top Dead Center (TDC) at the same time are known as companion cylinders. The cylind ...

See also:

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 ...