2020 Chevrolet Express Electrical system Problems
- Complaints
- 3about this part
- Share
- 18%of 17 total for the year
- Median mileage
- 1,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2020 Chevrolet Express, 18% of the 17 complaints for this model year. Where a mileage was given, the median is 1,000 miles.
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.
“While driving this cargo van, the driver stopped in traffic to make a left hand turn. In the middle of the turn, the vehicle stalled out and would not immediately start, exposing the vehicle to nearly being hit by the oncoming traffic. When the vehicle eventually restarted, and later brought to a GM dealer for repair, it was discovered that the main ground cable had completely deteriorated. In our fleet of 15 GM vehicles, this is now the SEVENTH vehicle that has needed this main ground cable replaced. This is a serious issue that needs to be addressed.”
NHTSA complaint #11695217, filed 2025-10“The vehicle is experiencing an under-chassis manufacturing wiring harness restriction (Connector X185) that was installed too tightly from the factory, dropping the 5-volt reference power circuit down to 0 volts under load. This intermittent electrical failure completely starves the fuel pump, causing the fuel loop pressure to drop to a dangerous 43.5 PSI while driving (GM factory specification is 55–100 PSI). This electrical breakdown simultaneously chokes the fuel tank vapor loops, causing the fuel tank pressure to spike to an extreme -1100 vacuum pressure parameter. …”
NHTSA complaint #11766626, filed 2026-09Related service bulletins
- 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…
- 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.
- 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…
- 11014222Jan 28, 2025This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
- 11013269Jan 16, 2025This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 3 | 18% |
| 2019 | 1 | 13% |
| 2018 | 4 | 36% |
| 2017 | 2 | 10% |
| 2016 | 3 | 20% |
| 2015 | 2 | 25% |
| 2014 | 3 | 21% |
| 2013 | 5 | 23% |
| 2012 | 3 | 23% |
| 2011 | 1 | 8% |
| 2010 | 2 | 13% |
| 2009 | 1 | 10% |
| 2008 | 2 | 14% |
| 2007 | 2 | 11% |
| 2006 | 2 | 17% |
| 2005 | 4 | 17% |
| 2004 | 1 | 5% |
| 2003 | 10 | 17% |
| 2002 | 9 | 16% |
| 2001 | 6 | 13% |
| 2000 | 4 | 5% |
| 1999 | 7 | 10% |
| 1998 | 1 | 4% |
| 1997 | 1 | 3% |
| 1996 | 3 | 20% |
Other parts of the 2020 Chevrolet Express
9 complaintsEngine
3 complaintsBody and structure
3 complaintsBrakes
2 complaintsOther or unknown
2 complaintsFuel system
1 complaints
← All problems reported for the 2020 Chevrolet Express
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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