1989 GMC Sierra 1500 I (GMT400) Club Coupe LWB Wideside Dimensions, Size & Specs

The maximum weight or gross vehicle weight rating (GVWR) of the 1989 GMC Sierra 1500 I (GMT400) Club Coupe LWB Wideside is 2812 kg (6,200 lbs). This weight includes the vehicle itself, passengers, cargo, and any additional equipment. This capacity makes it suitable for a full-size pickup truck capable of handling substantial payloads and towing tasks typical for trucks in its class and era.

The GMC Sierra 1500 I (GMT400) Club Coupe LWB Wideside originally fits tire sizes of 235/75 R15, 245/75 R16, and 245/75 R15. These tire options provide a balance of durability and ride comfort, suitable for both on-road use and moderate off-road or heavy-duty conditions consistent with a pickup truck's dual requirements.

Most standard single-car garages have door widths around 2438 mm (96 inches) and lengths roughly 5486 mm (216 inches). Given the Sierra's length of 6157 mm (242.3 inches) and width of 1951 mm (76.8 inches), it may be challenging for this model to fit comfortably in a standard single-car garage without careful maneuvering. The vehicle's length significantly exceeds typical garage depths, so it is better suited to larger garages or outdoor parking.

The GMT400 generation, including the Sierra 1500 Club Coupe LWB Wideside, introduced in 1988, replaced the earlier GMT400-based trucks from the 1980s but featured a refined and slightly larger body overall. Compared to its predecessor, this model gained improvements in length and width, enhancing interior space and cargo capacity while maintaining rugged pickup utility. With a length of 6157 mm versus older models typically under 6100 mm, the increase allowed for longer beds and extended cab options, appealing to users requiring more storage and passenger space.

Compared to contemporaries such as the Ford F-150 and Dodge Ram 1500 of the late 1980s, the GMC Sierra 1500 I (GMT400) LWB Wideside sits comfortably within the full-size pickup range. Its length of over 6.1 meters matches or slightly exceeds many competitors, offering a spacious bed and interior. The width of nearly 2 meters provides good shoulder room inside the cab. Overall, the Sierra 1500's size aligns with market expectations for full-size pickups, balancing utility, passenger comfort, and maneuverability.

The vehicle stands at 1793 mm (70.6 inches) tall. This height is typical for a full-size pickup, offering a commanding driving position and sufficient ground clearance for varied road and off-road conditions. However, it also means that clearance in low garages or parking structures should be checked, as the taller profile can limit access compared to standard cars.

The GMC Sierra 1500 I (GMT400) Club Coupe LWB Wideside, produced from 1988 to 1992, emphasized durability, utility, and comfort in its full-size pickup design. It offered a long wheelbase and a wideside bed, providing more cargo space. It typically includes a robust V8 engine, improved suspension systems from the previous generation, and a spacious interior suitable for both work and daily driving needs.

The tire sizes 235/75 R15, 245/75 R16, and 245/75 R15 contribute to the truck's balance between ride comfort and ruggedness. The relatively tall sidewalls (75% of the tire width) help absorb shocks from rough terrain, ideal for a truck designed for work and occasional off-road use. These tires also influence ground clearance and fuel efficiency, with the option of a 16-inch wheel potentially enhancing road grip and handling precision.

The maximum vehicle weight of 2812 kg (6,200 lbs) sets the framework for the truck's towing and payload capabilities. A higher GVWR means the chassis and suspension can safely handle heavier loads without compromising vehicle stability or safety. Thus, this weight rating supports the Sierra 1500's credentials as a reliable work truck capable of towing trailers and hauling heavy cargo within its class limits.