Your GM vehicle has a number of sophisticated computers that record information about the vehicle’s performance and how it is driven. For example, your vehicle uses computer modules to monitor and control engine and transmission performance, to monitor the conditions for airbag deployment and deploy airbags in a crash and, if so equipped, to provide antilock braking to help the driver control the vehicle. These modules may store data to help your dealer/retailer technician service your vehicle. Some modules may also store data about how you operate the vehicle, such as rate of fuel consumption or average speed. These modules may also retain the owner’s personal preferences, such as radio pre-sets, seat positions, and temperature settings.
Service Publications Ordering Information
Event Data RecordersChevrolet 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 ...