General Motors Service Update: GMC Hummer EV & Sierra EV Models Market Insights

General Motors Service Update for GMC Hummer EV and Sierra EV Models

General Motors has discovered that several GMC Hummer EV and GMC Sierra EV models have been labeled incorrectly with information regarding the 12 - volt battery . This mistake requires GM to find a solution.

The Service Update N242451390 released by General Motors is targeting specific GMC Hummer and Sierra models that have been affected by this labeling error . This update indicates that certain units from the 2022 and 2025 model years may have left the factory with inaccurate labeling on the 12 - volt battery negative cable . Technicians will be instructed to inspect the vehicles properly and remove the incorrect label , a process that should take approximately 15 minutes.

These labels play a crucial role for First Responders in emergency situations . General Motors vehicles come equipped with the OnStar feature , a service that can be essential in times of need . The OnStar service starts at 4.99 per month for the basic Connected Vehicle plan , but can go up to 9.99 for the Premium version . However , additional options can increase the price to 00.

In the event of an accident , the built - in sensors will automatically notify OnStar , allowing an Advisor to locate the vehicle and inform First Responders of its location . The labels on the vehicle provide vital information for First Responders , especially when dealing with Electric vehicles like the GMC Hummer and Sierra EV models.

The GMC Hummer EV and Sierra EV are both built on the GM BT1 platform and feature the GM Ultium Drive motor technologies and Ultium batteries . These vehicles are produced at the GM Factory Zero plant in Michigan . The Hummer EV , available as both a pickup truck and SUV , is equipped with a massive 205 - kWh battery , providing a range of up to 314 miles . Meanwhile , the Sierra EV , powered by two electric motors generating 754 horsepower and 785 pound - feet of torque , can travel up to 440 miles on a single charge . The range - topping Hummer EV boasts an impressive 1,000 horsepower and 11,000 pound - feet of torque.