OnStar®
If the vehicle has OnStar and you subscribe to the OnStar services, please refer to the OnStar Terms and Conditions for information on data collection and use.
See also:
Capacities and Specifications
Capacities and Specifications
Engine Specifications
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Fuel System Messages
FUEL LEVEL LOW
This message displays when the
vehicle is low on fuel. Refuel as
soon as possible.
TIGHTEN GAS CAP
This message displays when the
fuel cap is not on tight. Tighten the
fuel c ...
Active Fuel Management™
Your vehicle’s V8 engine may have Active Fuel
Management™. This system allows the engine to
operate on either all or half of its cylinders,
depending on your driving conditions.
When less po ...