2008 Chevrolet Tahoe electrical system problems
87 owner complaints filed with NHTSA name the electrical system on the 2008 Chevrolet Tahoe — 16% of all complaints for this model year.
What owners report
“The battery energy control module GM Part # 84442220 located inside the HV battery assembly caught fire. The harness that was most affected was the battery cell voltage sense wires. The way the battery voltage sense circuit is manufactured seems dangerous as there is no fusible link between the…”
filed Apr 19, 2026
“We were sitting in a parking lot with the engine running and heard an explosion in the vehicle. Later we discovered that the left rear, side curtain air bag had deployed. Horn has been inoperable for months cruise control hasn't worked in years steering wheel radio controls don't work. No…”
filed Nov 30, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Electrical SystemCampaign 10V240000 · Jun 4, 2010
- Electrical SystemCampaign 08V441000 · Aug 28, 2008
Related service bulletins
This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
23-NA-001 · Service Bulletin/Repair Instructions · issued Mar 28, 2025
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% |
| 2018 Tahoe | 12 | 12% |
| 2017 Tahoe | 20 | 12% |
| 2016 Tahoe | 31 | 12% |
| 2015 Tahoe | 135 | 21% |
| 2014 Tahoe | 15 | 17% |
Other reported problem areas on the 2008 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.