Drive Mode Description And Operation (Chevrolet With AWD): Notes

The drive mode system is a customer configurable control that allows the vehicle operator to tailor the vehicle operation and driveabiity parameters based on driving conditions. The drive mode is controlled by the vehicle operator through the S126 Drive Mode Select Switch. The S126 Drive Mode Select Switch is a momentary switch that enables or disables AWD mode.

The S126 Drive Mode Select Switch is an input to the K20 Engine Control Module. When the switch is pressed, the K20 Engine Control Module will broadcast a message to all modules indicating the requested drive mode. Control modules that are involved in changing their operation based on differing drive modes will then change their operating values.

The components of the drive mode are:

• S126 Drive Mode Select Switch
• K20 Engine Control Module

Other control modules or components that may respond to the commanded drive mode are:

K47 Rear Differential Clutch Control Module