2024 Gmc Sierra Hd Red Long Bed Iowa. The motortrend buyer's guide has the 2024 gmc sierra 2500hd specs you need, from dimensions and cargo space to power and mpgs. Smallest of all is the regular cab with a length of 236.6 inches.

The longest version is the crew cab with the long bed at 266.77 inches. Unlike other cabs, it is only available with a long bed.