First look at the all-new 2024 GMC Sierra 2500HD AT4! This 2500 HD comes in onyx black on black with kalahari stitching perforated leather interior. The powertrain consists of a 6.6 liter turbocharged V8 engine mated to a 10-speed automatic transmission.
2024 GMC Sierra 2500HD AT4 Duramax POV Test Drive & Review
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First look at the all-new 2024 GMC Sierra 2500HD AT4! This 2500 HD comes in onyx black on black with kalahari stitching perforated leather interior. The powertrain consists of a 6.6 liter turbocharged V8 engine mated to a 10-speed automatic transmission.
AT4 Forum Featured Photos
AT4 Forum Featured Photos
