General Motors launched the GMC Sierra AT4 with the debut of the light-duty pickup’s fourth generation for the 2019 model year. The Sierra range, including the AT4, was later refreshed for the 2022.5 ...
After launching its Sierra EV full-size electric truck exclusively in Denali specification, GMC is expanding the lineup by adding the 2026 GMC Sierra EV Elevation and AT4 trim levels, aiming to ...
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