2026 GMC Sierra 3500 Electrical system Problems
- Complaints
- 1about this part
- Share
- 20%of 5 total for the year
- Median mileage
- —not reported
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 1 complaints about the electrical system of the 2026 GMC Sierra 3500, 20% of the 5 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Have been driving it on four separate occasions and the engine will start running rough and shut off leaving me with no power brakes or power steering. Once when I was going about 30 miles an hour the other three times when I was coming to a stop with a trailer on just took it in Kendall Chevrolet for the first time they are still working on it but unable to duplicate the problem this is a very serious safety concern for myself and possibly for others that have the same issue”
NHTSA complaint #11744605, filed 2026-06Related service bulletins
- 11019545Apr 24, 2025This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.
- 11017595Apr 3, 2025This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- 11017244Mar 31, 2025The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 11017247Mar 28, 2025This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 20% |
| 2025 | 3 | 18% |
| 2024 | 16 | 31% |
| 2023 | 4 | 14% |
| 2022 | 7 | 22% |
| 2021 | 4 | 20% |
| 2020 | 9 | 18% |
| 2019 | 3 | 23% |
| 2018 | 2 | 14% |
| 2017 | 3 | 23% |
| 2016 | 2 | 11% |
| 2015 | 6 | 19% |
| 2014 | 1 | 14% |
| 2013 | 1 | 7% |
| 2012 | 2 | 22% |
| 2011 | 2 | 10% |
| 2009 | 1 | 20% |
| 2008 | 1 | 4% |
| 2007 | 2 | 13% |
| 2005 | 3 | 13% |
| 2004 | 5 | 21% |
| 2003 | 1 | 14% |
| 2001 | 1 | 3% |
| 2000 | 1 | 4% |
| 1999 | 1 | 5% |
| 1998 | 1 | 8% |
Other parts of the 2026 GMC Sierra 3500
2 complaintsWheels
2 complaintsBrakes
1 complaintsFuel system
1 complaintsSteering
1 complaints
← All problems reported for the 2026 GMC Sierra 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology