See also:

Engine Heater
The engine coolant heater, if available, can help in cold weather conditions at or below −18°C (0°F) for easier starting and better fuel economy during engine warm-up. Plug in the coolant hea ...

Using the Re-dial Command
1. Press and hold for two seconds. The system responds with “Ready” followed by a tone. 2. After the tone, say “Re-dial”. The system responds with “Re-dial using <phone name>� ...

Fuel
Use of the recommended fuel is an important part of the proper maintenance of your vehicle. To help keep your engine clean and maintain optimum vehicle performance, GM recommends the use of gaso ...