2021 Chevrolet 4500HD Problems & Complaints

Few complaints1.5× as many complaints as a typical year of the 4500HD at the same age

Owners have filed 1 complaint about the 2021 Chevrolet 4500HD with the National Highway Traffic Safety Administration. That is a low number of complaints for a car on sale this long. The most reported problem area is the engine & cooling (1 complaint, typically around 38,000 miles). 2 recalls cover this model year, including one with a do-not-drive or park-outside warning.

1complaints
2recalls
0crashes
1fires
0injuries
0deaths

Most common 2021 Chevrolet 4500HD problems

  • Engine & cooling~38,000 miles
    1100%

Share of the 1 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.

Chevrolet 4500HD complaints by model year

20192020202120221
Owner complaints per model year, Chevrolet 4500HD. Colour = our verdict for that year (red: avoid, orange: caution, green: better than average, blue: too new).

Compare all Chevrolet 4500HD years →

2021 Chevrolet 4500HD recalls (2)

Service brakes, hydraulic

NHTSA recall 23V-266 · Apr 13, 2023 · 40,428 vehiclesPark outside

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.

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…

Equipment

NHTSA recall 22V-874 · Nov 23, 2022 · 5,861 vehicles

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.

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.

Frequently asked questions

Is the 2021 Chevrolet 4500HD a good car?

Based on 1 owner complaint filed with NHTSA, the 2021 4500HD rates few complaints: 1.5× as many complaints as a typical year of the 4500HD at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.

What is the most common problem with the 2021 Chevrolet 4500HD?

The engine & cooling — 1 complaint, 100% of all complaints for this model year.

How many recalls does the 2021 Chevrolet 4500HD have?

There are 2 recalls for the 2021 Chevrolet 4500HD, the most recent from April 13, 2023 (service brakes, hydraulic). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.

At what mileage do 2021 Chevrolet 4500HD problems happen?

The median mileage reported in complaints is about 38,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.

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.