Carrying passengers or cargo? Knowing your gross vehicle weight rating helps ensure you don’t overload your vehicle.
Gross vehicle weight rating, or GVWR, might sound like a term only professional truck drivers are aware of. In reality, it’s an important figure every driver of a GMC pickup truck, SUV and crossover needs to keep in mind in order to remain safe while carrying cargo or passengers alike.
Easily found on a label placed inside the driver’s door jamb, the GVWR figure is the maximum weight a GMC pickup truck, SUV or crossover is engineered to safely carry. While this figure does not include the total weight of any trailer being towed, it does include the passengers, personal effects, and cargo carried, along with the weight (or the curb vehicle weight) of the truck itself and the tongue weight of the trailer.
You may not give much thought about those figures while making short trips or carrying a couple of small items, but when it comes time to load your GMC with lots of passengers or cargo, it’s important to keep your GMC’s GVWR in mind. Failure to do so may result in you exceeding the GVWR and overloading your vehicle.
Overloading your truck or SUV can carry severe consequences, including:
- Broken springs and suspension components due to excess weight
- Brakes unable to stop the truck or SUV in a timely manner
- Transmission and other driveline components may overheat and sustain serious damage
- Unusual suspension behavior, making the vehicle hard to control
- Tire temperatures rising to elevated levels, potentially leading to a blowout
Knowing both your vehicle’s gross vehicle weight and gross vehicle weight rating allow you to quickly calculate how much you can safely carry. For example, take a look at the 2020 GMC Sierra 1500 Crew Cab Short Box 4WD with the available 3.0L Duramax® Turbo-Diesel engine. The gross vehicle weight rating for this particular model is 7,200 pounds†. The weight of this Sierra (unloaded and without occupants) is 5,350 pounds. By subtracting the weight from the GVWR, you can determine this particular Sierra can carry about 1,884 pounds without exceeding its maximum weight rating.
That doesn’t necessarily mean you can universally carry 1,810 pounds of cargo in its pickup box – the weight of passengers within the cab also needs to be factored into the GVWR. If you have two 200-pound passengers climb into that same Sierra, it now has an available capacity of 1,410 pounds.
You should also take care to not overload the weight on the individual axles of your GMC. To prevent this, it’s important to know the gross axle weight rating, or GAWR, of your vehicle. This number represents the maximum amount of weight that can be placed on an individual axle.
The GAWR includes the weight of the vehicle, passengers, cargo and trailer tongue weight (if applicable). Also, front and rear axles can have individual GAWR numbers.
It's important to always abide by the GVWR and GAWR specifically set for your GMC truck or SUV. In the course of vehicle development, professional engineers have extensively pushed these vehicles to their limits in order to keep you, your passengers, and your belongings safe and to avoid damage to your vehicle. Staying within these limits helps your truck, trailer, and travel remain safe.
SIX TIPS FOR SAFE TRAILERING AND TOWING
Before you hitch a trailer up to your truck or SUV and hit the open road, consider these six tips to help ensure a safe journey.
KNOW WHICH TRAILER TYPE IS RIGHT FOR YOUR NEEDS
Trailers aren’t one-size-fits-all. In fact their varying designs and configurations mean they can handle quite differently when hitched to your tow vehicle.
TONGUE WEIGHT: WHY IT’S KEY TO SAFE TOWING
Properly loading a trailer to maintain a proper tongue weight is paramount, especially when it comes to handling.