Service brakes, hydraulicRecall 23V-266 · Chevrolet vehicles
General Motors, LLC recall 23V-266 covers 40,428 Chevrolet vehicles for a service brakes, hydraulic problem, reported to NHTSA on April 13, 2023. The manufacturer's latest report (2025 Q2) shows 74% of affected vehicles repaired.
Park outside and away from structures until repaired
Source: NHTSA recall 23V266000 and manufacturer quarterly reports. Started by the manufacturer.
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 repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
74%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA. 79 vehicles were listed as unreachable.