2002 GMC Sierra 1500 II (GMT800) Dimensions, Size & Specs

The curb weight of the GMC Sierra 1500 II (GMT800) ranges between 1847 kg and 2325 kg (4,072 to 5,128 pounds), depending on factors like cab configuration, bed length, drivetrain options, and trim levels. Heavier versions typically correspond to extended cab or crew cab models with longer beds and additional equipment, while regular cab models with shorter beds are on the lighter end of the spectrum. This variation in weight impacts fuel consumption, towing capacity, and driving dynamics.

The maximum gross vehicle weight rating (GVWR) for the GMC Sierra 1500 II (GMT800) ranges from 2767 kg to 4173 kg (6,100 to 9,200 pounds) depending on the specific model and configuration. This rating indicates the combined maximum weight of the vehicle, passengers, cargo, and any trailer tongue weight. Staying within the GVWR is critical for maintaining safe handling, braking efficiency, and overall vehicle integrity. Overloading beyond this limit can cause mechanical strain and increase the risk of accidents.

Given its dimensions — length ranging up to 5641 mm (222.0 inches) and width up to 2024 mm (79.7 inches) — the GMC Sierra 1500 II can be a tight fit in many standard residential garages. Typical garage dimensions are approximately 6 meters (20 feet) deep and 3 meters (10 feet) wide for a single car space. While the width is generally manageable, longer models and those equipped with accessories like bed covers or roof-mounted gear might require careful maneuvering to fit comfortably. Owners of longer wheelbase versions or crew cabs should measure their garage space before parking to avoid damage.

The 2002-2007 GMC Sierra 1500 II comes standard with 16-inch rims fitted with tires sized either 255/75 R16 or 245/75 R16. These tire sizes provide a good balance between ride comfort, off-road capability, and load carrying capacity. The tires have a relatively tall sidewall, beneficial for absorbing road irregularities and offering better traction on varied terrain typical for pickup trucks. Additionally, these dimensions contribute to the vehicle’s overall height, ground clearance, and handling characteristics.

Compared to the previous generation GMC Sierra 1500 (GMT400, produced until 1998), the 2002-2007 Sierra 1500 II (GMT800) is considerably larger in exterior dimensions. It gained length (up to 5641 mm vs. earlier approximately 5528 mm max), width, and height, resulting in increased interior space and cargo capacity. This size increase aligned with market demands for more versatile, spacious, and comfortable pickups. The newer generation also featured updated styling and chassis improvements that enhanced ride quality and towing ability, underscoring a leap forward in both size and capability.

The GMC Sierra 1500 II (GMT800) from 2002-2007 was dimensionally competitive with rivals such as the Ford F-150 (10th generation) and Chevrolet Silverado 1500 of that period. Its length, width, and height placed it squarely within the full-size pickup segment. For example, the Ford F-150 models in that era typically measured around 5300-5800 mm in length and approximately 2000 mm in width, making the Sierra similarly sized but with model-specific variations. This situates the Sierra well for buyers seeking a traditional full-size truck with substantial cargo area and passenger room.

The GMC Sierra 1500 II provides comfortable seating for up to six passengers in extended cab and crew cab configurations, with standard bench seating or optional bucket seats depending on trim. Interior passenger volume is enhanced compared to its predecessor, with increased legroom, headroom, and shoulder room, particularly in crew cab variants. The cabin layout is designed for both utility and comfort, accommodating daily driving and work needs. Cargo bed size varies with model, ranging from short beds of approximately 1.5 meters (5 feet) to long beds up to around 2.0 meters (6.5 feet), allowing a balance between passenger space and hauling capability.

The GMC Sierra 1500 II introduced enhancements in suspension to improve ride quality and durability. This generation used an upgraded front independent suspension and a solid rear axle with leaf springs, optimizing load handling and off-road performance. Changes in ride height contributed to its increased overall height measurements ranging from 1808 mm to 1935 mm (71.1 to 76.2 inches), depending on trim and suspension setup. These updates delivered a better balance of on-road comfort and off-road capability compared to earlier models, influencing the truck's footprint and ground clearance.

The 2002-2007 GMC Sierra 1500 II’s size means it offers substantial cargo capacity and passenger comfort but requires consideration when parking and maneuvering in tight spaces. Its length can exceed 5.6 meters (222 inches), and width close to 2 meters (79.7 inches), which can challenge parking in urban environments and narrow parking spots. Drivers often benefit from cautious maneuvering or use of parking aids where available. However, the size translates to commanding road presence, improved towing and payload abilities, and better off-road clearance compared to smaller vehicles, making it ideal for users valuing utility and versatility.