2021 Chevrolet Tahoe Electrical System Problems
Owners have filed 56 complaints with NHTSA about electrical system problems on the 2021 Chevrolet Tahoe, 12% of all complaints for this model year. Half of the reports with a mileage happened before 37,000 miles. The words owners use most often: “control module” (9% of reports).
- 56electrical system complaints
- 37,000median miles at failure
- 1mention a crash
- 1mention an injury
- 1related recalls
- 57%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Control module: mentioned in 5 of 56 complaints (9%)
At what mileage do electrical system problems happen?
Based on 9 complaints that reported the odometer reading.
How serious are the reports?
Of 56 complaints, 1 mention a crash, 2 a fire, 1 an injury.
Chevrolet Tahoe electrical system complaints by model year
| Model year | Electrical System complaints | Share of that year | Median miles |
|---|---|---|---|
| 2025 Tahoe | 8 | 16% | — |
| 2024 Tahoe | 14 | 21% | 15,769 |
| 2023 Tahoe | 38 | 17% | 15,000 |
| 2022 Tahoe | 38 | 20% | 60,000 |
| 2021 Tahoe | 56 | 12% | 37,000 |
| 2020 Tahoe | 12 | 21% | 60,000 |
| 2019 Tahoe | 16 | 15% | 39,000 |
| 2018 Tahoe | 13 | 12% | 8,350 |
| 2017 Tahoe | 20 | 11% | 50,000 |
| 2016 Tahoe | 31 | 12% | 58,500 |
| 2015 Tahoe | 135 | 21% | 59,500 |
| 2014 Tahoe | 15 | 17% | 54,000 |
| 2013 Tahoe | 17 | 7% | 89,867 |
| 2012 Tahoe | 13 | 7% | 80,000 |
| 2011 Tahoe | 17 | 4% | 62,704 |
| 2010 Tahoe | 16 | 5% | 64,176 |
| 2009 Tahoe | 33 | 12% | 72,500 |
| 2008 Tahoe | 87 | 16% | 63,000 |
| 2007 Tahoe | 142 | 12% | 80,000 |
| 2006 Tahoe | 24 | 21% | 123,000 |
| 2005 Tahoe | 126 | 43% | 65,500 |
| 2004 Tahoe | 214 | 46% | 68,000 |
| 2003 Tahoe | 193 | 38% | 73,500 |
| 2002 Tahoe | 30 | 7% | 91,500 |
| 2001 Tahoe | 20 | 4% | 60,813 |
| 2000 Tahoe | 11 | 4% | 74,451 |
| 1999 Tahoe | 47 | 9% | 89,339 |
| 1998 Tahoe | 20 | 8% | 87,000 |
| 1997 Tahoe | 21 | 5% | 125,000 |
| 1996 Tahoe | 34 | 12% | 98,500 |
| 1995 Tahoe | 35 | 14% | 117,500 |
When owners reported it
Related recalls (1)
Air bags:srs malfunction warning lamp/light; electrical system:software
Problem: General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.
Risk: The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
Fix: The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N212338110.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
While at a drive thru, my 2021 Chevy Tahoe High Country experienced a total failure with no advance warning where the engine shut down and would not restart despite what appeared to be good electrical power. We tried to jump start the vehicle with both another vehicle as well as a AAA power pack…
The backup camera quit working
During highway driving, alert on dashboard stated âelectrical system failing enter idle modeâ. Tahoe slowed down and then engine began knocking right as it shut off resulting in needing to coast to the shoulder of the highway safely since engine was off. Towed to dealership and then they came…
Frequently asked questions
Do all 2021 Chevrolet Tahoes have electrical system problems?
No. NHTSA has 56 owner complaints about electrical system for the 2021 Chevrolet Tahoe (12% of the 456 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2021 Chevrolet Tahoe electrical system?
Yes: 1 safety recall list electrical system. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
At what mileage do electrical system problems start?
The median reported mileage is 37,000 miles: half of the reports with a mileage came before that.
What do owners say about electrical system problems on the 2021 Chevrolet Tahoe?
The most frequent phrase is “control module”, in 5 of 56 complaints.
Other 2021 Chevrolet Tahoe problems
See all 2021 Chevrolet Tahoe problems or electrical system problems across all Tahoe years.