2021 CHEVROLET 4500HD — Problems, Recalls & Safety Data
N/A
Safety Rating
1
Owner Complaint
2
Recalls
4
Service Bulletins
0
Investigations
Overview of the 2021 CHEVROLET 4500HD
The 2021 CHEVROLET 4500HD has received a total of 1 safety complaint filed with the National Highway Traffic Safety Administration (NHTSA). There have been 2 recall campaigns affecting this vehicle, covering issues with SERVICE BRAKES, HYDRAULIC, EQUIPMENT. 4 technical service bulletins have been issued by General Motors, LLC for this model year. The most commonly reported problem area is the Engine (1 complaint).
Recalls for the 2021 CHEVROLET 4500HD
NHTSA has recorded 2 recalls for the 2021 CHEVROLET 4500HD, potentially affecting up to 46,289 vehicles.
Recall 23V266000 — SERVICE BRAKES, HYDRAULIC
| 40,428 vehicles affected
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...
View full details →Recall 22V874000 — EQUIPMENT
| 5,861 vehicles affected
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...
View full details →Owner Complaints for the 2021 CHEVROLET 4500HD
1 complaint has been filed with NHTSA for the 2021 CHEVROLET 4500HD. Below is a breakdown by vehicle component.
| Component | Complaints | Crashes | Fires | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 1 | 0 | 1 | 0 | 0 |
Most Recent Complaints
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 was towed to the salvage lot. The vehicle was not diagnosed. The manufacturer was not contacted. The failure mileage was 37,632.
Safety Rating for the 2021 CHEVROLET 4500HD
NHTSA has not yet tested the 2021 CHEVROLET 4500HD in its New Car Assessment Program.
Technical Service Bulletins for the 2021 CHEVROLET 4500HD
General Motors, LLC has issued 4 technical service bulletins (TSBs) for the 2021 CHEVROLET 4500HD. TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.
PIT6173 — UNKNOWN OR OTHER
This Preliminary information communicates a diagnostic tip to inform dealership technician on how to reset/learn the BPP sensor in the Powertrain Interface Module (PIM)
12-01-37-001F — EQUIPMENT
This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
21-NA-115 — ENGINE AND ENGINE COOLING
This informational bulletin provides information for dealers/technicians on Available ECM Calibration to Activate High Idle Mode for Fleet Vehicles.
17NA050 — FUEL SYSTEM, DIESEL
This informational bulletin explains how a health report is required when doing repairs on LCF vehicles.
NHTSA Investigations for the 2021 CHEVROLET 4500HD
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the CHEVROLET 4500HD
- 2017 CHEVROLET 4500HD — 0 complaints
- 2018 CHEVROLET 4500HD — 0 complaints
- 2019 CHEVROLET 4500HD — 0 complaints
- 2020 CHEVROLET 4500HD — 0 complaints
- 2021 CHEVROLET 4500HD (current)
- 2022 CHEVROLET 4500HD — 0 complaints
- 2023 CHEVROLET 4500HD — 0 complaints
Other CHEVROLET Models
- CHEVROLET MALIBU — 28,991 total complaints
- CHEVROLET SILVERADO 1500 — 22,175 total complaints
- CHEVROLET IMPALA — 15,197 total complaints
- CHEVROLET TAHOE — 12,511 total complaints
- CHEVROLET EQUINOX — 12,135 total complaints
- CHEVROLET BLAZER — 11,032 total complaints
- CHEVROLET SILVERADO — 10,928 total complaints
- CHEVROLET SUBURBAN — 10,375 total complaints