Chevrolet Recall 23V-266: Service brakes, hydraulic

Affected: 2019–2022 Chevrolet 4500HD, 2019–2022 Chevrolet 5500HD, 2022 Chevrolet 6500HD. Filed with NHTSA on April 13, 2023, covering about 40,428 vehicles.

Park outside: the manufacturer advises owners to park outside and away from structures until repaired.

The problem

General Motors. LLC (GM) is recalling certain 2019-2023 Chevrolet 4500HD, 5500HD, and 6500HD Medium-Duty trucks. The brake pressure sensor assembly may leak brake fluid into the brake pressure switch and cause an electrical short-circuit.

The risk

An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.

The fix

Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the master cylinder pressure sensor and inspect the wire harness, replacing it, if necessary, free of charge. Owner notification letters were mailed July 11, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222375270.

Recall details

NHTSA campaign23V-266 (23V266000)
Manufacturer numberN222375270
ManufacturerGeneral Motors, LLC
ComponentService brakes, hydraulic
Report dateApril 13, 2023
Owners notifiedJuly 11, 2023
Vehicles affected40,428
Initiated byManufacturer

Vehicles covered

Plus 6 other model/year combinations not covered on this site.

Owner complaints about the brakes

Frequently asked questions

Is the recall 23V-266 repair free?

Yes. Chevrolet dealers will fix the problem at no cost: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the master cylinder pressure sensor and inspect the wire harness, replacing it, if necessary, free of charge.

How do I know if my car is included?

Not every vehicle of the listed model years is affected — the recall covers 40,428 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.

Is it safe to drive?

Owners are advised to park outside and away from buildings until the repair is done, because of a fire risk.

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.