2021 Chevrolet Silverado 2500 Electrical system Problems
- Complaints
- 17about this part
- Share
- 19%of 89 total for the year
- Median mileage
- 1,656miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 17 complaints about the electrical system of the 2021 Chevrolet Silverado 2500, 19% of the 89 complaints for this model year. Where a mileage was given, the median is 1,656 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“6.6l gas truck would not start. Forums ive visited state this is a known problem with the ECM. After approx 30mins it started. However before that it sputtered out every time I would try to start it. It appears to be an intermittent problem. It ran fine once it eventually did start. Also auto start wouldn't engage when this problem was occurring.”
NHTSA complaint #11388641, filed 2021-01, 1,656 miles“After two weeks of ownership, the rear camera has stopped working. Instead, I receive an error message. There are no shortage of complaints like this on various model Chevrolet forums. Most 2020/2021 customers indicating there has not been resolution or specific issue identified.”
NHTSA complaint #11416218, filed 2021-05, 261 miles“The tailgate on our truck keeps automatically coming down and up on its own. It doesn’t matter if the truck is in park or drive. It doesn’t matter if it’s locked or unlocked. It will do it several times in a row. It will go half way back up and then just slam down. Unfortunately we didn’t know this was an issue as we just bought the truck a few days before we noticed it happening and it fell down and hit something in our garage causing a dent and multiple scratches as it happened overnight without us being aware of the issue. …”
NHTSA complaint #11652897, filed 2025-04“The tailgate on my truck is electrically opened & closed. I've been having trouble with the tailgate opening randomly, even while driving. This has happened multiple times and can create a very dangerous situation, especially if i'm hauling something in the bed of the truck and it could possibly fall out if the tailgate were to open. Once i was hauling a bunk bed and the tailgate opened without me knowing it. Fortunately, we were driving through town on a flat road when it happened & nothing fell out. Someone behind me pulled up beside me to let me know my tailgate just opened. …”
NHTSA complaint #11679809, filed 2025-08“Tailgate. Yes it can be inspected. It opens and closes randomly , I was going on to the freeway for work when I suddenly received a notice that the tailgate was opening. when I pulled over the gate was open and all the contents were at the end of the truck bed, power saws and equipment almost flew out into traffic! I then called the dealer who told me there was a recall and to bring it in, so I did and when I pulled in the service department the tailgate opened upon entering service area. After about 20 minutes he tells me that mine is not covered. Warranty ran out! And not on that Vin#. …”
NHTSA complaint #11581794, filed 2024-04Related service bulletins
- 11024486May 16, 2025This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
- 11019017Apr 10, 2025This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
- 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…
- 11017255Mar 25, 2025This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering…
- 11017207Mar 21, 2025This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 11017031Mar 12, 2025This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
- 11014579Feb 19, 2025This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs.
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11014239Jan 29, 2025This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 3 | 23% |
| 2025 | 8 | 27% |
| 2024 | 55 | 38% |
| 2023 | 16 | 34% |
| 2022 | 29 | 30% |
| 2021 | 17 | 19% |
| 2020 | 18 | 17% |
| 2019 | 19 | 26% |
| 2018 | 13 | 25% |
| 2017 | 15 | 28% |
| 2016 | 18 | 15% |
| 2015 | 58 | 32% |
| 2014 | 6 | 15% |
| 2013 | 10 | 20% |
| 2012 | 11 | 21% |
| 2011 | 9 | 9% |
| 2010 | 2 | 10% |
| 2009 | 9 | 15% |
| 2008 | 23 | 12% |
| 2007 | 11 | 5% |
| 2006 | 14 | 8% |
| 2005 | 98 | 36% |
| 2004 | 105 | 29% |
| 2003 | 86 | 19% |
| 2002 | 10 | 3% |
| 2001 | 26 | 7% |
| 2000 | 5 | 4% |
| 1999 | 4 | 5% |
| 1998 | 5 | 7% |
| 1997 | 2 | 3% |
Other parts of the 2021 Chevrolet Silverado 2500
30 complaintsBrakes
12 complaintsFuel system
9 complaintsEngine
8 complaintsLatches, locks and linkages
8 complaintsOther or unknown
7 complaintsBody and structure
4 complaintsForward collision avoidance
3 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsExterior lighting
2 complaintsSteering
2 complaints
← All problems reported for the 2021 Chevrolet Silverado 2500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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