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2017

Eight-speeds for all! GMC extends upgraded transmission to all 2017 Sierras

2017 GMC Sierra 1500

What changes will make the 2017 Sierra 1500 different? Wider availability of the 8-speed automatic transmission, along with minor trim and detail updates. This full-size pickup is GMC’s mechanically similar, but generally more expensive, version of the Chevrolet Silverado. This ...

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