How big is the 2023 GMC Sierra 2500HD AT4 4WD Crew Cab Long Box's fuel tank? How efficient is a 2023 GMC Sierra 2500HD AT4 4WD Crew Cab Long Box? The 2023 GMC Sierra 2500HD AT4 4WD Crew Cab Long ...

The 2019 GMC Sierra AT4 proves that GM's upmarket truck and ... Both motors are paired to stop-start fuel-saving systems, along with a new 10-speed automatic transmission. The GMC Sierra's ...

When you want to go off-road, uptown-style, GMC supports ... for better fuel economy, hill climbs and descents, driving in deep sand or snow, and more. The Sierra AT4 has a standard 3.0L Duramax ...

The crew cab with the standard bed remains our Sierra 2500HD configuration of choice. While the rugged AT4 and ... with the GMC's standard gas-fed V-8 should expect to see even worse fuel economy ...

IL 7 Popular GMC Sierra 2500 HD Trims for Sale GMC Sierra 2500HD 4WD Crew Cab Standard Bed SLT for Sale 21 GMC Sierra 2500HD 4WD Crew Cab Standard Bed AT4 for Sale 19 GMC Sierra 2500HD 4WD Crew Cab ...

IL 5 Popular GMC Sierra 2500 HD Trims for Sale GMC Sierra 2500HD 4WD Crew Cab Standard Bed SLT for Sale 16 GMC Sierra 2500HD 4WD Crew Cab Standard Bed AT4 for Sale 15 GMC Sierra 2500HD 4WD Crew Cab ...