The vehicle may have a fuel saving stop/start system to shut off the engine and help conserve fuel.
When the brakes are applied and the vehicle is at a complete stop, the engine may turn off. When the brake pedal is released or the accelerator pedal is pushed, the engine will restart. The engine may restart even while the brake is applied. See Starting the Engine.
Data Link Communications Description and Operation
Note:This is an overview of different serial data buses used by GM devices to communicatewith each others. UseData Communication Schematicsto find out which serial data buses are configured for a specific vehicle.Circuit DescriptionThere are many components in a vehicle that rely on information from ...