OnStar Services

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Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy possible. • Avoid fast starts and accelerate smoothly. • Brake gradually and avoid abrupt stops. ...

Capacities and Specifications
The following approximate capacities are given in English and metric conversions. See Recommended Fluids and Lubricants for more information. Engine Specifications ...

Engine Oil Additives
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all you will need for good performance and engine protection. ...