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GMC Sierra Truck Bed Dimensions

If you are a GMC truck owner, you know that the Sierra is one of the best trucks on the market today. From the first generation GMC Sierra in 1988 to the present fifth generation, the Sierra has gone through some changes over the years.

The GMC Sierra is similar to the Chevrolet Silverado which is a long-lasting work truck. One of the most impressive features of these trucks is the size of the truck bed. If you plan on hauling a heavy load or simply looking to move a piece of furniture, the GMC Sierra will get the job done.

But before you consider moving any items in the truck bed, it’s important to know the actual dimensions to ensure a proper fit.

GMC Sierra Truck Bed Dimensions

The GMC Sierra 1st generation trucks were in production from 1988 until 2002. After 1999, only the heavy-duty models were produced until 2002.

The GMC Sierra 2nd generation trucks were in production from 1999 until 2007.

The GMC Sierra 3rd generation trucks were in production from 2007 until 2013.

The GMC Sierra 4th generation trucks were in production from 2014 until 2019.

The GMC Sierra 5th generation trucks were in production from 2019 until present.

Throughout the years, the GMC Sierra was built with a short box, a standard box, and a long box each with slightly different dimensions.

  • Short box: 69.9″ long x 71.4″ wide x 22.4″ high – cargo volume 64.69 cu ft
  • Standard box: 79.4″ long x 71.4″ wide x 22.4″ high – cargo volume 73.48 cu ft
  • Long box: 98.2″ long x 71.4″ wide x 22.4″ high – cargo volume 90.89 cu ft
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How much weight can a GMC Sierra truck bed hold?

The amount of weight a pickup truck bed can hold (payload capacity) depends on the truck class and the vehicle itself. Pickup trucks are divided into 3 classes.

  • 1/2 ton
  • 3/4 ton
  • 1 ton

A 1/2-ton truck can carry a payload capacity of 1000 pounds. A 3/4-ton truck has a payload capacity of 1,500 pounds and a 1-ton truck has a payload capacity of 2000 pounds.

Most trucks produced today can exceed these payload limits. Depending on the truck’s design, engine size, and more, most trucks will have higher payloads.

The GMC Sierra/ Chevrolet Silverado 1500 has a payload capacity of 1,480 – 2,300 pounds.

The GMC Sierra/ Chevrolet Silverado 3500 has a payload capacity of 4,353 – 4,572 pounds.

A GMC Sierra standard box pickup truck bed has the dimensions of 79.4″ x 71.4″ x 22.4″

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