2024 GMC Sierra 3500 electrical system problems
12 owner complaints filed with NHTSA name the electrical system on the 2024 GMC Sierra 3500 — 28% of all complaints for this model year.
What owners report
“"The integrated trailer brake system abruptly fails while towing heavy loads, completely disabling trailer break stopping power and creating an imminent threat of highway crash and serious bodily injury." The sound system inherently stops working and will not produce sound from any device in the…”
filed Jul 16, 2026
“This 2024 GMC Sierra Heavy Duty has experienced a continuous pattern of major mechanical and electrical failures since early ownership. The vehicle required a complete engine replacement under warranty at approximately 43,626 miles. Since that time, the vehicle has continued to experience repeated…”
filed Feb 17, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Sierra 3500 years
| Year | Reports | Share |
|---|---|---|
| 2023 Sierra 3500 | 4 | 14% |
| 2022 Sierra 3500 | 7 | 24% |
| 2021 Sierra 3500 | 4 | 20% |
| 2020 Sierra 3500 | 9 | 18% |
| 2016 Sierra 3500 | 2 | 11% |
| 2015 Sierra 3500 | 6 | 20% |
| 2011 Sierra 3500 | 2 | 10% |
| 2008 Sierra 3500 | 1 | 4% |
| 2005 Sierra 3500 | 3 | 13% |
| 2004 Sierra 3500 | 5 | 21% |
| 2001 Sierra 3500 | 1 | 3% |
| 2000 Sierra 3500 | 1 | 4% |
Other reported problem areas on the 2024 GMC Sierra 3500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.