Tag Archives: 2024 Sierra HD AT4X

First Look – 2024 GMC Sierra HD AT4X, and AEV

GMC  today announced 2024 GMC Sierra HD AT4X , emphasizing the premium Sierra HD AT4X AEV Edition*. AT4X includes a new Off-Road Mode. When engaged, the Off-Road Mode adjusts vehicle calibrations, such as the anti-lock brakes, traction control and stability control, to provide what’s claimed to be optimized performance off-road. Continue reading

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