NHTSA Recall 21V346000: Software (engine and engine cooling)
General Motors, LLC reported this safety recall to NHTSA on , covering an estimated 196 vehicles. It affects 2 models including the Chevrolet 6500.
| NHTSA campaign | 21V346000 |
|---|---|
| Manufacturer campaign | N202325530 |
| Component | ENGINE AND ENGINE COOLING › ENGINE › ENGINE CONTROL MODULE (ECU/ECM) › SOFTWARE |
| Report received | May 13, 2021 |
| Owner notification | June 7, 2021 |
| Initiated by | Manufacturer |
Defect
General Motors, LLC (GM) is recalling certain 2019-2020 Chevrolet 6500HD vehicles. The engine control module (ECM) was calibrated incorrectly, allowing the vehicle to exceed the tires' maximum speed rating of 75 mph.
Safety risk
Tire failure can occur if the vehicle speed exceeds the maximum tire speed rating, increasing the risk of a crash.
Remedy
Dealers will update the ECM software, free of charge. Owner notification letters were mailed June 7, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202325530.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Vehicles covered by recall 21V346000
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.