Owners urged to park outside until dealers install free brake‑switch fix. General Motors is pulling 62,468 heavy‑duty Chevrolet Silverado chassis‑cab trucks off the road after discovering a brake pressure defect that can spark an electrical short — and, in the worst case, a fire.
The action affects 2019‑2024 Silverado 4500 HD, 5500 HD and 6500 HD models built for businesses that rely on dump bodies, utility beds and other upfits. Here’s what drivers need to know right now.
Brake pressure leak increases fire risk in Chevrolet Silverado heavy‑duty trucks, says NHTSA notice
GM told federal regulators that brake fluid can seep through the pressure sensor and into the switch’s wiring harness. When fluid meets electricity, the switch may overheat, raising the odds of an engine‑bay fire whether the truck is idling, cruising down the interstate or parked in a depot. That’s a scary thought, isn’t it?
All fixes will be done free of charge. Dealers were alerted on June 12, and GM plans to mail the first notification letters by July 28. A second letter will follow once replacement parts are widely available. Until a technician completes the repair, GM strongly advises owners to keep the trucks parked outdoors and well away from buildings or anything flammable.
Which specific Silverado cab‑chassis trucks are part of the recall and how many of each model year are at stake
Most of the affected vehicles are 2023 Silverado 5500 HDs, but earlier and later model years make the list, too. Use the table below to see whether your workhorse is included:
| Model year | Silverado 4500 HD | Silverado 5500 HD | Silverado 6500 HD |
|---|---|---|---|
| 2019 | 389 | 6,948 | 2,248 |
| 2020 | 313 | 5,439 | 1,804 |
| 2021 | 360 | 6,424 | 2,135 |
| 2022 | 483 | 7,339 | 3,635 |
| 2023 | 415 | 10,097 | 5,102 |
| 2024* | 514 | 6,632 | 2,191 |
*2024 trucks built with a new silicone‑sealed harness are excluded.
Owners advised to park outside and contact GM or the federal safety hotline for immediate guidance
Still unsure whether your VIN is on the roster? Grab your phone and call GM’s customer assistance line at 866‑467‑9700 (recall N242482680) or the NHTSA hotline at 888‑327‑4236 (recall 25V390). You can also plug the VIN into nhtsa.gov for a quick check.
Remember, the same trucks were repaired under campaign 23V266 and now need this updated remedy. Consequently, scheduling that service visit the moment parts arrive will keep your fleet, and your property, safe.