The vehicle has a number of computers that record information about the vehicle’s performance and how it is driven or used. For example, the vehicle uses computer modules to monitor and control engine and transmission performance, to monitor the conditions for airbag deployment and deploy them in a crash, and, if equipped, to provide antilock braking to help the driver control the vehicle. These modules may store data to help the dealer technician service the vehicle or to help GM improve safety or features. Some modules may also store data about how the vehicle is operated, such as rate of fuel consumption or average speed. These modules may retain personal preferences, such as radio presets, seat positions, and temperature settings.
The exterior lamp control is on the instrument panel to the left of the steering column.
There are four positions:
: Turns the exterior lamps off and deactivates the AUTO mode. Turn again to reactivate the AUTO mode.