2018 Chevrolet Tahoe electrical system problems
12 owner complaints filed with NHTSA name the electrical system on the 2018 Chevrolet Tahoe — 12% of all complaints for this model year.
What owners report
“The Body Control Module does not work. A new BCM was installed in my car in April 2025. Since then I am having multiple issues, but the safety related issue is with the trailer braking system. It is available for inspection upon request. The dealership is unwilling to try another BCM without it…”
filed Jul 14, 2025
“My vehicle started announcing service trailer brake system when i purchased my vehicle about 5k miles in i took it to the dealer they couldn't find anything wrong now that message started to get worse not only is it a safety concern due to the annoying beeping. Sound on the dashboard indicating…”
filed Jan 29, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Tahoe years
| Year | Reports | Share |
|---|---|---|
| 2025 Tahoe | 8 | 21% |
| 2024 Tahoe | 12 | 20% |
| 2023 Tahoe | 36 | 18% |
| 2022 Tahoe | 35 | 20% |
| 2021 Tahoe | 56 | 13% |
| 2020 Tahoe | 11 | 20% |
| 2019 Tahoe | 16 | 16% |
| 2017 Tahoe | 20 | 12% |
| 2016 Tahoe | 31 | 12% |
| 2015 Tahoe | 135 | 21% |
| 2014 Tahoe | 15 | 17% |
| 2013 Tahoe | 16 | 7% |
Other reported problem areas on the 2018 Chevrolet Tahoe
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.