VehicleVerdict

2021 Chevrolet 4500HD problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just one complaint on file for the 2021 Chevrolet 4500HD — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

1

NHTSA complaints

2

Recalls

0

Investigations

0

Crash-involved

1

Fires reported

0

Injuries

0

Deaths

—

NCAP overall

How does 2021 compare to other 4500HD years?

4500HD NHTSA complaints by model year, 2021 highlighted1 complaints2017: 0 complaints2018: 0 complaints2019: 0 complaints2020: 0 complaints2021: 1 complaints2022: 0 complaints2023: 0 complaints
4500HD NHTSA complaints by model year, 2021 highlighted. Red bars are years to avoid.

See all 4500HD years to avoid →

What are the most common 2021 Chevrolet 4500HD problems?

ComponentComplaintsShare
Engine1100%

Does the 2021 Chevrolet 4500HD have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

23V266000BrakesApril 13, 2023 · 40,428 units

Defect

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.

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.

22V874000OtherNovember 23, 2022 · 5,861 units

Defect

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.

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.

Consumer complaints filed with NHTSA

Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.

“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…”

Complaint filed with NHTSA · Engine · April 11, 2023 · fire

2021 Chevrolet 4500HD — common questions

Is the 2021 Chevrolet 4500HD reliable?

The record is thin — 1 NHTSA complaint — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 2021 Chevrolet 4500HD have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 2021 Chevrolet 4500HD. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.