See your warranty book before using your vehicle for racing or other competitive driving. After reviewing your warranty book, please see the GM Performance Parts website or catalog and contact the race sanctioning bodies, for example Sports Car Club of America (SCCA) or Grand American, for parts and equipment required for racing or other competitive driving.
Chevrolet Cobalt Service & Repair Manual. 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
cylinder that is at TDC of its compression stroke is called the event cylinder.
The cylinder that is a ...