Unfortunately, the heavy-duty version of the Sierra pickup does not get crash tested by any official organization. The closest alternative is the 1500, which receives a score of Good from the IIHS in most categories. However, this heavy vehicle is designed to take some serious punishment and won't be brought down easily unless you regularly play chicken with semis. Don't.
NHTSA safety ratings are not available at this time.
Unfortunately, the majority of Sierra models come equipped with nothing more than the most basic safety features. These include traction and stability control, a rearview camera, a teen driver system, and six airbags: dual front, front side, and side curtain. You can opt for some driver-assist packages, but only the Denali comes standard with forward collision alert, automatic emergency braking, front and rear park assist, lane-keep assist, lane change alert, blind-spot monitoring, rear cross-traffic alert, and an HD surround-view camera.
|GMC Sierra 3500HD Trims||Pro||SLE||SLT||AT4||Denali|
|Rear Parking Aid||O||O||O||O||S|
|Blind Spot Monitor||O||O||O||O||S|
|Lane Departure Warning||N/A||O||O||O||S|
|Lane Keeping Assist||N/A||N/A||N/A||N/A||N/A|
|Tire Pressure Monitor||S||O||O||O||O|
While there is no reliability rating specifically for the GMC Sierra 3500HD, J.D. Power shows that owner satisfaction for the similar 2500 models is extremely high - 84 out of 100. There has also not been an excessive number of recalls issued for the truck in the past few years. There were three in 2021 for incorrect seat belt bolts, an improperly secured front seat belt bracket, and a potential short circuit in the brake-pressure modulator value.
Warranty cover for the 2023 GMC Sierra 3500HD comprises a three-year/36,000-mile bumper-to-bumper warranty, while the powertrain and roadside assistance plans remain active for five years/60,000 miles.
Though it lacks an official safety rating, the 2023 Sierra 3500HD is considered to be a safe vehicle.
There are six airbags in total, covering the dual front, front side, and side curtain locations.