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#BS-2021-CHE450-F201

2021 Chevrolet 4500hd

Based on reports from 1 owners and 2 recalls for this exact model.

Complaints
1
Crashes
0
Fires
1
Recalls
2
TSBs
306
🟢

Preliminary Verdict

Proceed with Caution

Based on 1 complaints, 0 crashes, 1 fires, and 2 recalls.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the EngineHIGH

1 owners reported engine issues — failures commonly reported around 38K miles.

+ 3 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Engine (1 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Engine1 (100%)

2021 Chevrolet 4500hd: Known Issues & Problem Areas

Engine Issues

Engine complaints account for 100% of all reports filed for the 2021 Chevrolet 4500hd, with 1 owners filing complaints with NHTSA. The median mileage at time of complaint is 37,632 miles, suggesting issues tend to surface around the 38K-mile mark.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (2 recalls)

22V874000Feb 2023

EQUIPMENT

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.

23V266000Park OutsideJul 2023

SERVICE BRAKES, HYDRAULIC

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.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 1 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 2 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Chevrolet 4500hd Model Years

2023202220212020201920182017
View all Chevrolet 4500hd years →

2021 Chevrolet 4500hd: Frequently Asked Questions

What is the most common problem with the 2021 Chevrolet 4500hd?
The most commonly reported issue with the 2021 Chevrolet 4500hd is related to the engine, with 1 complaints filed with NHTSA.
Is the 2021 Chevrolet 4500hd reliable?
The 2021 Chevrolet 4500hd has 1 complaints, 0 crash reports, and 1 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.
How much does it cost to fix 2021 Chevrolet 4500hd problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 2021 Chevrolet 4500hd have any recalls?
Yes, the 2021 Chevrolet 4500hd has 2 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Chevrolet 4500hd problems start?
Based on 1 complaints with mileage data, the median mileage at time of complaint is 37,632 miles. The highest concentration of reported issues occurs in the 30–60K mile range. The full report breaks down exactly which components fail at each mileage bracket.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
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