2 recalls covering model years 2020, 2021, 2023. To check whether your vehicle is affected, look up your 17-character VIN at nhtsa.gov/recalls — a recall may apply only to some vehicles of a given year.
Reported 2025-11-06 · Campaign 25V768000 · Model years: 2020
These medium-duty Silverado trucks already had a brake wiring harness put in under an earlier recall. On some of them, that replacement wiring was installed without the protective tape that is supposed to wrap it. Unprotected wires can rub and get damaged over time. If those brake wires are damaged, the power assist that makes your brake pedal easy to press can quit working, so the truck becomes much harder to stop. The dealer takes the harness out, tapes it properly, and puts it back in.
A sensor that watches brake fluid pressure can leak fluid into the brake pressure switch next to it. The fluid can cause an electrical short that overheats the wiring, and that can start a fire — while you are driving or while the truck is just sitting parked. GM says park the truck outside and away from buildings until it is fixed. Dealers replace the wire harness for the switch. Trucks repaired under the earlier recall need this new fix too.
⚠ NHTSA advises: park outside and away from structures (fire risk).
Chevrolet problem guides that cover the Silverado 4500