Recalls for 2021 Chevrolet 5500hd

DEFECT #1 - EQUIPMENT

Posted on: 2022-11-25
Description
General motors, llc (gm) is recalling certain 2021-2022 chevrolet 4500hd/5500hd/6500hd vehicles.  The hex flange lock nuts used in the suspension and steering joints, were improperly heat treated and may break.  

Consequence
Broken hex flange lock nuts may cause a loss of tension, leading to steering instability, and increasing the risk of a crash.  

Corrective Action
Dealers will replace the hex flange lock nuts as necessary, free of charge.  Owner notification letters are expected to be mailed january 30, 2023.  Owners may contact chevrolet customer service at 1-800-222-1020.  Gm's number for this recall is n222391080.  

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.nhtsa.gov.  

DEFECT #2 - SERVICE BRAKES, HYDRAULIC

Posted on: 2023-04-13
Description
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.

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

Corrective Action
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.  Interim letters notifying owners of the safety risk were mailed may 10, 2023.  Second letters will be mailed once the remedy is available.  Owners may contact chevrolet customer service at 1-800-222-1020.  Gm's number for this recall is n222375270.

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.nhtsa.gov.