NHTSA campaign 21V346000 · Manufacturer campaign N202325530
Chevrolet Recall 21V-346: Engine Control Module Calibrated Incorrectly
NHTSA recall 21V346000 (Manufacturer campaign N202325530) was reported by General Motors, LLC on May 13, 2021, with 196 vehicles potentially affected (per NHTSA). NHTSA's record lists the Chevrolet 6500 and Chevrolet Silverado 6500 for the 2019 model year. Owners were notified on June 7, 2021, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V346000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Chevrolet VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V346000 (also written 21V-346 or 21V346)
- Filed by
- General Motors, LLC
- Manufacturer campaign number
- N202325530
- Report received
- Potentially affected
- 196 vehicles (per NHTSA)
- Component
- Engine and Engine Cooling — Engine — Engine Control Module (ECU/ECM) — Software
- Owners notified
Repair completion: 92.86% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 21V346000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Chevrolet
All Chevrolet recallsNHTSA's recall notice
As NHTSA's recall record states it for campaign 21V346000.
Defect description
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 consequence
Tire failure can occur if the vehicle speed exceeds the maximum tire speed rating, increasing the risk of a crash.
Manufacturer 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.
Sources
Official NHTSA notice for recall 21V346000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.