GMC Sierra Bed Dimensions: A Comprehensive Guide

The GMC Sierra is a popular full-size pickup truck that has earned a reputation for its power, versatility, and durability. It’s a workhorse of a vehicle that can handle heavy loads and tough terrain, making it a favorite among truck owners. One important aspect of the GMC Sierra that truck owners need to consider is the bed dimensions.

In this article, I will provide a comprehensive guide to the bed dimensions of the GMC Sierra. I will cover the length, width, and height of the truck’s standard and available bed options, as well as their corresponding cargo capacities. 

History and evolution of GMC Sierra Bed Dimensions

The GMC Sierra is a popular full-size pickup truck that has been around for decades. Over the years, the truck has undergone several changes, including its bed dimensions. In this article, we’ll take a look at the history and evolution of GMC Sierra bed dimensions.

Early GMC Sierra models and their bed dimensions:

When the GMC Sierra was first introduced in 1962, it had a bed length of 6.5 feet. This remained the standard bed length for the truck until the mid-1990s. In 1988, GMC introduced a new step-side bed option that featured a shorter bed length of 6 feet.

How bed dimensions have changed over the years:

In the mid-1990s, GMC began offering a longer bed option for the Sierra. The new long bed measured 8 feet in length and was popular among contractors and other workers who needed to haul larger loads. However, the longer bed also meant that the truck’s overall length increased, making it more challenging to park and maneuver.

In 1999, GMC redesigned the Sierra and introduced a new short bed option that measured 5.75 feet. This shorter bed was more compact and easier to maneuver, making it a popular choice among urban and suburban truck owners. However, the shorter bed also meant a reduction in cargo capacity.

In recent years, GMC has continued to offer multiple bed options for the Sierra, including a standard bed length of 6.6 feet, a short bed length of 5.8 feet, and a long bed length of 8.2 feet. The cargo capacities of these bed options vary, with the long bed offering the most significant cargo capacity.

Reasons for changes in bed dimensions:

The changes in GMC Sierra bed dimensions over the years have been driven by several factors. These include customer demand for more compact and maneuverable trucks, as well as the need for larger cargo capacities. Additionally, changes in safety and emissions regulations have also influenced the design and dimensions of the truck.

Understanding GMC Sierra Bed Dimensions

The bed dimensions of a GMC Sierra are a critical factor in choosing the right pickup truck for your needs. In this article, we’ll explore the different types of bed dimensions available for the GMC Sierra, as well as the standard bed dimensions for different generations of trucks.

Types of GMC Sierra Bed Dimensions:

The GMC Sierra is available with several different types of bed dimensions, including standard bed, short bed, and long bed options. These options can vary in length, width, and height, and each has its own cargo capacity.

Standard bed dimensions for different generations of GMC Sierra:

The standard bed dimensions for the GMC Sierra have changed over the years as the truck has undergone various redesigns and updates. Here are the standard bed dimensions for different generations of the GMC Sierra:

1962-1998: 6.5-foot standard bed

1988-1998: 6-foot step-side bed

1999-2006: 6.6-foot standard bed, 5.75-foot short bed

2007-2013: 6.6-foot standard bed, 5.8-foot short bed, 8-foot long bed

2014-2018: 6.6-foot standard bed, 5.8-foot short bed, 8-foot long bed

2019: 6.6-foot standard bed, 5.8-foot short bed, 8.2-foot long bed

How bed dimensions are measured:

Bed dimensions for the GMC Sierra are measured in three dimensions: length, width, and height. Length is measured from the inside of the tailgate to the inside of the cab, while the width is measured from one inside wall to the other. Height is measured from the top of the bed rail to the bottom of the bed floor.

It’s essential to measure the bed dimensions accurately to ensure that any accessories or cargo you add to the bed fit securely and safely. It’s also essential to consider the cargo capacity of each bed option to ensure that you choose the right size for your hauling needs.

Factors to Consider When Choosing GMC Sierra Bed Dimensions:

Choosing the right bed dimensions for your GMC Sierra is crucial to ensure that you get the most out of your pickup truck. Here are some factors to consider when choosing the best bed dimensions for your needs:

Cargo requirements: One of the most critical factors to consider when choosing bed dimensions for your GMC Sierra is your cargo requirements. If you frequently haul large or bulky items, a longer bed may be the best option for you. However, if you mostly use your truck for daily commuting, a shorter bed may be more practical.

Towing capacity: Another essential factor to consider when choosing bed dimensions for your GMC Sierra is the truck’s towing capacity. If you plan to tow heavy loads, such as trailers or boats, you may want to choose a longer bed that can accommodate the extra weight.

Fuel efficiency: Longer beds tend to weigh more and may negatively impact fuel efficiency. If fuel efficiency is a priority for you, a shorter bed may be the best option.

Personal preference: Personal preference is also an essential factor to consider when choosing bed dimensions for your GMC Sierra. Some truck owners prefer a longer bed for its increased cargo capacity, while others prefer a shorter bed for its maneuverability and ease of parking.

GMC Sierra Bed Accessories and Modifications:

The bed of a GMC Sierra is a versatile space that can be customized with various accessories and modifications to enhance its functionality and protect it from wear and tear. Here are some popular bed accessories and modifications for the GMC Sierra:

Bed liners: Bed liners are an essential accessory for protecting the bed of your GMC Sierra from scratches, dents, and other damage. They come in various materials, including rubber, plastic, and carpet, and can be easily installed to provide a non-slip surface that keeps your cargo in place.

Tonneau covers: Tonneau covers are another popular bed accessory for the GMC Sierra. They provide a weather-resistant cover that protects your cargo from the elements and provides added security. Tonneau covers come in various materials, including vinyl, fiberglass, and aluminum, and can be easily installed with minimal tools.

Bed extenders: Bed extenders are useful accessories for the GMC Sierra, particularly if you need to haul long or bulky items. They attach to the tailgate and provide additional length to the bed, making it easier to transport items that may not fit in the standard bed dimensions.

Tailgate step and handle: The tailgate step and handle are essential accessories for the GMC Sierra, particularly if you frequently load and unload items from the bed. The step and handle provide a stable platform for stepping onto the bed, making it easier and safer to access your cargo.

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