Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Automatic Door Unlock
The doors will automatically unlock when the shift lever is moved into P (Park).
See Vehicle Personalization . ...
Ride Control System Messages
SERVICE TRACTION CONTROL
This message displays when there is a problem with the Traction Control System (TCS). When this message is displayed, the system will not limit wheel spin. Adjust your drivin ...
Driving Uphill
Once you decide you can safely drive up the hill,
you need to take some special steps.
• Use a low gear and get a firm grip on the
steering wheel.
• Get a smooth start up the hill and try to ...