OnStar Services

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California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is no ...

Vehicle Overview
GMC’s full-size van sells in fewer numbers than the similar Chevrolet Express but attracts a loyal clientele. Along with its full-size rivals from Dodge and Ford, the rear-drive truck-based van ...

Under the Hood
Mechanical features include: 185-horsepower, 2.9-liter inline-four-cylinder with aluminum block and cylinder head, dual overhead camshafts and four valves per cylinder that makes 190 pounds-feet ...