Service
Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported service people.
We hope you will want to keep your GM vehicle all GM. Genuine GM parts have one of these marks:
See also:
Tachometer
The tachometer displays the engine speed in revolutions
per minute (rpm). ...
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 ...
Service Only Mode
This power mode is available for service and diagnostics, and to verify the proper
operation of the malfunction indicator lamp as may be required for emission inspection
purposes. With the vehicle ...