2021 Chevrolet Tahoe Electrical system Problems
- Complaints
- 58about this part
- Share
- 13%of 461 total for the year
- Median mileage
- 37,000miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 58 complaints about the electrical system of the 2021 Chevrolet Tahoe, 13% of the 461 complaints for this model year. Where a mileage was given, the median is 37,000 miles. 1 of these say a crash was involved and 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Vehicle will not start. Only 6900 miles. Battery fine, lights and radio work, windows and tailgate work. Car turns over, but just won't start. Read manual, did everything suggested. Clearly an electronic error. And, because vehicle could not be started, it could not be put in neutral. Tow driver had to drag car across pavement on flatbed. Could not be good for brakes or anything else down below. When arrived at dealership, could not get Tahoe off flatbed. Winch only pulls up onto flatbed, does not push backwards. …”
NHTSA complaint #11407748, filed 2021-04, 6,900 miles“Vehicle brake module system failed after being replaced one week ago. All of my systems system lights are coming on on my dashboard. I cannot drive past 62 mph. This is the second time that this has happened under a month after vehicle being serviced at a GM dealership.”
NHTSA complaint #11628045, filed 2024-11“On 2 occasions the dash lights and gauges do not turn on when the vehicle is on. The first time this happened I was driving and was no longer able to see my speed or any other details provided by the gauges. We changed the fuse and it seemed to work for 1 day. The next day I turned the vehicle on, was able to drive but none of the dash features were functioning again. Will be taking to dealership when available scheduling to have it evaluated.”
NHTSA complaint #11640241, filed 2025-02“The airbags failed to deploy in my 2021 Chevrolet Tahoe after being involved in an accident where another vehicle t-boned my vehicle on the passenger side front end to rear end causing severe damage and pushing my vehicle with great force. A police report was taken by officers that responded to the traffic accident. A claim was filed with my auto insurance and my 2021 Chevrolet Tahoe is currently being repaired as it was not deemed a total loss. …”
NHTSA complaint #11566710, filed 2024-01“The truck had an airbag malfunction notice on the information center. We took the truck to the dealer and was told that it was an electrical problem with the airbags. That the only way to have it covered under warranty was for the vehicle to be under the bumper to bumper warranty. The truck at the time the mileage was 39844. We had the truck fixed since it was a safety issue. It cost $420+ to fix it. We feel that it should have been covered due to a safety issue.”
NHTSA complaint #11556299, filed 2023-11Related 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.
- 11016912Mar 5, 2025This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the power sliding…
- 11014602Feb 17, 2025This bulletin provides information to the tech on how to diagnosis the EGR system from possible issue that may cause the DTCs to set and cause the customers concern of a MIL…
- 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.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 9 | 17% |
| 2024 | 15 | 22% |
| 2023 | 40 | 17% |
| 2022 | 38 | 19% |
| 2021 | 58 | 13% |
| 2020 | 12 | 21% |
| 2019 | 16 | 15% |
| 2018 | 13 | 12% |
| 2017 | 20 | 11% |
| 2016 | 31 | 12% |
| 2015 | 135 | 20% |
| 2014 | 15 | 17% |
| 2013 | 17 | 7% |
| 2012 | 13 | 7% |
| 2011 | 17 | 4% |
| 2010 | 16 | 5% |
| 2009 | 33 | 12% |
| 2008 | 87 | 16% |
| 2007 | 142 | 12% |
| 2006 | 24 | 21% |
| 2005 | 126 | 43% |
| 2004 | 214 | 46% |
| 2003 | 193 | 38% |
| 2002 | 30 | 7% |
| 2001 | 20 | 4% |
| 2000 | 11 | 4% |
| 1999 | 47 | 9% |
| 1998 | 20 | 8% |
| 1997 | 21 | 5% |
| 1996 | 34 | 12% |
| 1995 | 35 | 14% |
| 1994 | 2 | 11% |
Other parts of the 2021 Chevrolet Tahoe
169 complaintsFuel system
120 complaintsTransmission and drivetrain
90 complaintsOther or unknown
41 complaintsAir bags
27 complaintsBrakes
22 complaintsForward collision avoidance
21 complaintsEngine cooling
17 complaintsExterior lighting
16 complaintsSteering
15 complaintsSeat belts
13 complaintsVehicle speed control
10 complaints
← All problems reported for the 2021 Chevrolet Tahoe
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