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2021 Chevrolet 4500hdProblems, recalls & complaints

NHTSA has logged 1 owner complaint about the 2021 Chevrolet 4500hd, most often about the engine. It is covered by 2 safety recalls, and for recall 23V-266 the manufacturer reports only 74% of affected cars repaired.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls2Lowest repair rate 74%Owner complaints11 with a crash, fire or injuryTypical failure mileage38kEngine, median miles

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through May 2, 2023. Updated daily.

Complaints by system

Where the 2021 Chevrolet 4500hd has problems

1 complaint grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine11

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

2 recalls

2021 Chevrolet 4500hd recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

74%repaired · 2025 Q2

Service brakes, hydraulic

Park outside

Recall 23V-266 · Apr 13, 2023 · 40,428 vehicles · 29,841 repaired

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

Problem, fix and repair progress →

82%repaired · 2024 Q4

Equipment

Recall 22V-874 · Nov 23, 2022 · 5,861 vehicles · 4,810 repaired

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

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Chevrolet.

Best & worst years

2021 vs. every other 4500hd year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the 4500hd median. How we score

'17'18'19'20'21'22'23
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
In owners' words

What 4500hd owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are removed.

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 11520064 · May 2, 2023 · 37,632 miles

Own a 2021 4500hd?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.