NHTSA vehicle safety data
2021 Chevrolet 4500HD Recalls & Complaints
The 2021 Chevrolet 4500HD has 2 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Chevrolet dealer.
NHTSA recall and complaint data for the 2021 Chevrolet 4500HD. Recall data is refreshed daily from NHTSA.
2021 Chevrolet 4500HD owner complaints
Owners have filed 1 complaint with NHTSA about the 2021 Chevrolet 4500HD, describing incidents dated April 11, 2023.
Most-cited components
- Engine 1 complaint
The complaint on file reports a fire (owner-reported, not verified by NHTSA).
Newest complaints
ODI #11520064 · Filed
The contact owned a 2021 Chevrolet Silverado 4500HD. The contact stated while the vehicle was parked, the contact noticed that the front end of the vehicle under the hood was in flames. The fire department was able to extinguish the fire. No police report was filed. No one was injured. The vehicle…
Brake Pressure Switch May Short and Cause Fire
NHTSA #23V266000 · Service Brakes, Hydraulic · NHTSA notice
Reported April 13, 2023 · General Motors, LLC
Potentially affected: 40,428 vehicles
Repair completion: 79.57% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign N222375270 · Owners notified July 11, 2023
Defect 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.
Safety consequence
An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Manufacturer remedy
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.
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.
Hex Flange Lock Nut May Break
NHTSA #22V874000 · Equipment · NHTSA notice
Reported November 23, 2022 · General Motors, LLC
Potentially affected: 5,861 vehicles
Repair completion: 88.01% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign N222391080 · Owners notified February 10, 2023
Defect 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.
Safety consequence
Broken hex flange lock nuts may cause a loss of tension, leading to steering instability, and increasing the risk of a crash.
Manufacturer remedy
Dealers will replace the hex flange lock nuts as necessary, free of charge. Interim owner notification letters informing owners of the safety risk were mailed December 27, 2022. Owner notification letters were mailed February 10, 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.
Other Chevrolet 4500HD model years
Check your 2021 Chevrolet 4500HD VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Chevrolet 4500HD at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
Check a Chevrolet VIN