See also:

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...

Auto Defog
This will allow you to turn the auto defog on or off. Press the MENU/SELECT knob when Auto Defog is highlighted to open the menu. Turn the knob to highlight On or Off. Press the knob to confirm th ...

Pulling a Trailer
Here are some important points: - There are many laws, including speed limit restrictions that apply to trailering. Check for legal requirements with state or provincial police. - Do not tow ...