2021 Chevrolet Silverado 3500: Problems & Reliability
CAUTION2021 Chevrolet Silverado 3500: CAUTION — 41 owner complaints, 1.5× the Silverado 3500 median year by raw count; top issue: electrical system (13 complaints).
CarWhere's verdict score for the 2021 is 1.45, where 1.00 is a typical Silverado 3500 year once complaints are weighted for severity and spread over time on the road; caution starts at 1.25 and avoid at 1.60. 48% of its complaints are severe — a crash, fire, injury or a safety-critical system.
Sources: NHTSA owner complaints (ODI), recall campaigns and manufacturer service bulletins, CarWhere verified buyer prices · Model years 2015–2026 compared · Updated 2026-11-07 · By CarWhere Research · Methodology
41
NHTSA complaints
1.5×
vs. median Silverado 3500 year
868
Service bulletins
5
Recall campaigns
Most-reported 2021 Chevrolet Silverado 3500 problems
Electrical system is the clear leader, named in 32% of complaints.
| Component | Complaints | Share of 2021 complaints |
|---|---|---|
| Electrical system | 13 | 32% |
| Powertrain / transmission | 7 | 17% |
| Latches, locks & linkages | 6 | 15% |
| Structure | 6 | 15% |
| Unknown or other | 5 | 12% |
A complaint can name more than one component, so shares can add up to more than 100%.
2021 Chevrolet Silverado 3500 recalls
5 recall campaigns on federal record for the 2021, reported between Dec 17, 2020 and Oct 24, 2024.
| NHTSA campaign | Reported | Component |
|---|---|---|
| 24V797000 | Oct 24, 2024 | Powertrain / transmission › Automatic transmission › Control module › Software |
| 24V060000 | Feb 1, 2024 | Latches, locks & linkages › Tailgate › Latch |
| 21V758000 | Sep 29, 2021 | Service brakes, hydraulic › Power assist › Electric › Control module |
| 20V811000 | Dec 23, 2020 | Seat belts |
| 20V792000 | Dec 17, 2020 | Seat belts |
2021 Chevrolet Silverado 3500 service bulletins
The manufacturer has filed 868 technical service bulletins with NHTSA for the 2021 — close to the 764 of the median Silverado 3500 year from 2015 to 2026. Coded bulletins most often cover electrical system (215), engine & cooling (178), powertrain / transmission (122). Bulletins are repair instructions for dealer technicians, not recalls.
The 2021 vs. the year before and after
From the 2020 to the 2021, owner complaints rose 46% (28 → 41) — a step backward. The 2022 that followed fell 32% (41 → 28), so the 2022 has the lighter record so far.
| Model year | Verdict | Complaints | Bulletins | Recalls | Avg. buyer-paid |
|---|---|---|---|---|---|
| 2020 Silverado 3500 | CAUTION | 28 | 934 | 8 | — |
| 2021 (this page) | CAUTION | 41 | 868 | 5 | — |
| 2022 Silverado 3500 | SOLID | 28 | 883 | 3 | — |
Prices are averages of CarWhere verified buyer transactions (shown when 3+ deals exist for the year). Full year-by-year table: Chevrolet Silverado 3500 years to avoid.
What to check on a used 2021 Chevrolet Silverado 3500
Electrical system (13 complaints on the 2021): test every light, window, lock, the infotainment screen and the charging system, and have the car scanned for stored fault codes.
Powertrain / transmission (7 complaints on the 2021): test-drive from cold through every gear and feel for slipping, harsh or delayed shifts and shudder; ask whether the transmission fluid has been serviced.
Latches, locks & linkages (6 complaints on the 2021): open and lock every door, the liftgate or trunk and the hood, by key fob and by hand.
Structure (6 complaints on the 2021): look under the car for rust or damage around the subframe and rockers, open every door and the liftgate, and check panel gaps for signs of repair.
Service brakes (5 complaints on the 2021): check pedal feel, pulling and grinding, look at rotor and pad wear, and ask when the brake fluid was last changed.
Recalls: confirm all 5 campaigns above were completed on this VIN.
Know what to pay for the right 2021 Chevrolet Silverado 3500 — then negotiate it
Years-to-avoid tells you which year. Search live listings to see the target price and what verified buyers actually paid for it.
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FAQ
Is the 2021 Chevrolet Silverado 3500 reliable?
2021 Chevrolet Silverado 3500: CAUTION — 41 owner complaints, 1.5× the Silverado 3500 median year by raw count; top issue: electrical system (13 complaints). CarWhere's verdict score for the 2021 is 1.45, where 1.00 is a typical Silverado 3500 year once complaints are weighted for severity and spread over time on the road; caution starts at 1.25 and avoid at 1.60.
What are the most common 2021 Chevrolet Silverado 3500 problems?
By NHTSA owner complaints, the most-reported areas on the 2021 Chevrolet Silverado 3500 are electrical system (13, 32%), powertrain / transmission (7, 17%), latches, locks & linkages (6, 15%). The manufacturer has 868 service bulletins on file for this model year.
How many recalls does the 2021 Chevrolet Silverado 3500 have?
5 recall campaigns on federal record for the 2021 Chevrolet Silverado 3500, most recently 24V797000 (Oct 24, 2024, powertrain / transmission); 24V060000 (Feb 1, 2024, latches, locks & linkages); 21V758000 (Sep 29, 2021, service brakes, hydraulic). Recall completion is VIN-specific, so check the exact car.
How do I check a specific 2021 Chevrolet Silverado 3500 before buying?
Decode the VIN free at carwhere.com/tools/vin-decoder to confirm the build, then run the $9.99 CarWhere Full VIN Report for the exact VIN — recall, complaint, and service-bulletin record for this model year, the original window sticker where the manufacturer publishes one, and a market price check from verified buyers. One-time purchase, no subscription.
Sources & method
Complaint, recall and service-bulletin counts for the 2021 Chevrolet Silverado 3500 come from NHTSA's Office of Defects Investigation; the verdict is CarWhere’s severity-weighted, time-on-road-adjusted score compared with the model’s own median year. Complaints are owner allegations, not verified defects. Full methodology.