Is Your 2024 GMC Sierra HD Pickup Truck Stalling? This Could Be the Reason
Although many safety problems can lead to recalls, sometimes the issues are minor enough to warrant something less. Some new 2024 GMC Sierra HD pickup trucks could stall and illuminate warning lights and codes on the dashboard. Thankfully, GM has an answer for this problem, which should be only a minor inconvenience to some truck owners.
Which models of the 2024 GMC Sierra HD have a stalling issue?
GMC Sierra heavy-duty pickup trucks equipped with the 6.6-liter Duramax turbodiesel V8 engine may have stalling issues. This can happen in the three-quarter-ton 2500 HD models and one-ton 3500 HD models. This issue may cause some warning lights to illuminate, including the Malfunction Indicator Lamp (MIL).
Once the truck stalls, the Engine Control Module could return one of ten trouble codes saved in the system, requiring owners to bring their trucks to an authorized service center.
What is GM’s response to this stalling problem?
GM released a Service Bulletin for GMC Sierra HD pickup trucks with this engine stalling issue. The automaker believes the problem to be nothing more than an anomaly in the software. Owners experiencing these stalling issues should bring their trucks to a certified GM service center for an inspection.
Service technicians will inspect the vehicle and update the ECM/TCM with the latest calibrations to fix the stalling issue. Tech will also complete a barometric pressure reset for these trucks. The entire process shouldn’t take longer than 30 minutes to complete.
Source: GM Authority