AVOIR

2021 GMC Sierra 3500HD

Ownership intelligence · HD Pickup Truck
69
Average
High Risk
AVOIR Score out of 100

What's a 2021 GMC Sierra 3500HD worth?

$34,998 – $42,998
Estimated used-market value · median $38,998 · based on 193 recent listings from AVOIR's resale panel (updated weekly).
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Category Scores

Reliability 70
Longevity 69
Maintenance 46
Depreciation 91
Performance 81

Reliability & Ownership FAQ

Is the 2021 GMC Sierra 3500HD reliable?

AVOIR rates the 2021 GMC Sierra 3500HD's reliability 70/100 — good — from NHTSA recall counts, complaint density, and multi-year defect trends. Its overall AVOIR ownership score is 69/100 (Average).

How long will a 2021 GMC Sierra 3500HD last?

AVOIR scores the 2021 GMC Sierra 3500HD's longevity 69/100 (good), estimated from high-mileage survival data and resale-panel evidence of how far these vehicles actually run.

What does it cost to own a 2021 GMC Sierra 3500HD?

AVOIR scores the 2021 GMC Sierra 3500HD on maintenance 46/100 and depreciation 91/100 — higher is better (lower real cost) — plus fuel, insurance and resale in the full breakdown above.

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AVOIR scores every vehicle across 7 ownership factors using EPA fuel-economy data, NHTSA safety & complaints, IIHS ratings, and a proprietary used-market resale panel.