The problem
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.
The risk
Tire failure can occur if the vehicle speed exceeds the maximum tire speed rating, increasing the risk of a crash.
The fix
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.
Recall details
| NHTSA campaign | 21V-346 (21V346000) |
|---|---|
| Manufacturer number | N202325530 |
| Manufacturer | General Motors, LLC |
| Component | Engine and engine cooling › Engine › Engine control module (ECU/ECM) › Software |
| Report date | May 13, 2021 |
| Owners notified | June 7, 2021 |
| Vehicles affected | 196 |
| Initiated by | Manufacturer |
Vehicles covered
Plus 1 other model/year combinations not covered on this site.
Frequently asked questions
Is the recall 21V-346 repair free?
Yes. Chevrolet dealers will fix the problem at no cost: 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.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 196 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.