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GMC entered 2015 with the redesign of the GMC Sierra 2500HD and the Sierra 3500HD (both featuring a brand-new new double-cab body style), as well as a redesigned Canyon and Yukon, adding more engine power, improved fuel economy and more standard features to both models. Meanwhile, the Terrain got rolling Wi-Fi, while the 1500HD was eliminated from the Sierra lineup altogether.
GMC entered 2015 with the redesign of the GMC Sierra 2500HD and the Sierra 3500HD (both featuring a brand-new new double-cab body style), as well as a redesigned Canyon and Yukon, adding more engine power, improved fuel economy and more standard features to both models. Meanwhile, the Terrain got rolling Wi-Fi, while the 1500HD was eliminated from the Sierra lineup altogether.