2020 GMC Sierra 3500

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2020 GMC Sierra 3500
RENDERED 2026-08-02T11:16:13.213Z

Not enough comparison years on file yet for a fair verdict.

This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.

How is this computed?

COMPLAINTS PER YEAR

Complaints per year, GMC Sierra 3500 Bar chart of distinct NHTSA complaints filed per model year, 2020 highlighted. 1996: 1 complaints 1996 1997: 10 complaints 1998: 12 complaints 1999: 19 complaints 2000: 26 complaints 2000 2001: 36 complaints 2002: 20 complaints 2003: 7 complaints 2004: 24 complaints 2004 2005: 24 complaints 2006: 11 complaints 2007: 16 complaints 2008: 24 complaints 2008 2009: 5 complaints 2010: 2 complaints 2011: 20 complaints 2012: 9 complaints 2012 2013: 14 complaints 2014: 7 complaints 2015: 30 complaints 2016: 19 complaints 2016 2017: 13 complaints 2018: 14 complaints 2019: 12 complaints 2020: 51 complaints 2020 2021: 20 complaints 2022: 27 complaints 2023: 26 complaints 2024: 40 complaints 2024 2025: 16 complaints 2026: 1 complaints 2026
2020: 51 complaints
View as data table
YearComplaints
19961
199710
199812
199919
200026
200136
200220
20037
200424
200524
200611
200716
200824
20095
20102
201120
20129
201314
20147
201530
201619
201713
201814
201912
202051
202120
202227
202326
202440
202516
20261

KNOWN PROBLEM AREAS

POWER TRAIN 37%

37% of complaints: power train — 19 distinct reports on file.

CRASH
Show complaint excerpts

driving approximately 50 mph when vehicle suddenly made loud bang and locked up rear brakes for 25' coming to a stop in road side ditch, numerous vehicles had to make evasive actions to avoid me and other vehicles.

NHTSA ODI report, 20240702

ELECTRICAL SYSTEM 16%

16% of complaints: electrical system — 8 distinct reports on file.

FIRE
SERVICE BRAKES 14%

14% of complaints: service brakes — 7 distinct reports on file.

CRASH
Show complaint excerpts

driving approximately 50 mph when vehicle suddenly made loud bang and locked up rear brakes for 25' coming to a stop in road side ditch, numerous vehicles had to make evasive actions to avoid me and other vehicles.

NHTSA ODI report, 20240702

ENGINE 12%

12% of complaints: engine — 6 distinct reports on file.

FIRE
Show complaint excerpts

Plugged in engine block heater and the car erupted in flames. Total loss.

NHTSA ODI report, 20221114

FUEL/PROPULSION SYSTEM 10%

10% of complaints: fuel/propulsion system — 5 distinct reports on file.

SAFETY TIMELINE

R 20191213 — seat belts

General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2020 Silverado 2500, Silverado 3500, Sierra 2500, and Sierra 3500 vehicles equipped with carpet floor covering.

Remedy: GM will notify owners, and dealers will close off the opening in the pretensioner bracket, free of charge. The recall began December 13, 2019.

Campaign 19V814000 — check if this car was fixed

R 20200413 — latches/locks/linkages

General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The hood-latch striker wires may not have been heat-treated properly, possibly causing them to fracture.

Remedy: GM will notify owners, and dealers will replace the hood assembly, free of charge. The recall began April 13, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267.

Campaign 20V142000 — check if this car was fixed

R 20200707 — latches/locks/linkages, structure

General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles previously recalled under 20V-142.

Remedy: GM will notify owners, and dealers will replace the hood assembly, free of charge. For hoods sold over the counter, dealers will contact customers with instructions for hood replacement. The recall began July 7, 2020.

Campaign 20V324000 — check if this car was fixed

R 20200903 — air bags

General Motors, LLC. (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5 and XT6, Chevrolet Blazer, Silverado 1500, 2500 and 3500 and Traverse and GMC Acadia and Sierra 1500, 2500 and 3500 vehicles.

Remedy: GM will notify owners, and dealers will replace the suspect RRAB modules, free of charge. The recall began September 3, 2020.

Campaign 20V446000 — check if this car was fixed

R 20210126 — seat belts

General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles.

Remedy: GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge. The recall began January 26, 2021.

Campaign 20V792000 — check if this car was fixed

I 20210409 — PE (closed 20230824)

Air Bag Malfunction

R 20240517 — latches/locks/linkages

General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates.

Remedy: Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed May 17, 2024.

Campaign 24V060000 — check if this car was fixed

R 20241212 — power train

General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel...

Remedy: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve.

Campaign 24V797000 — check if this car was fixed

R 20260306 — power train

General Motors, LLC is recalling certain 2020 Chevrolet Silverado 2500, 3500, GMC Sierra 2500, 3500, and 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles that may have been repaired incorrectly under recall 24V797.

Remedy: Dealers will inspect the vehicles and update the transmission control software, free of charge. Owner notification letters were mailed March 6, 2026.

Campaign 26V083000 — check if this car was fixed

BUY-SMART CHECKLIST

2020 GMC Sierra 3500 — pre-purchase inspection

  • Test/inspect for power train issues (19 reports on file for this year).
  • Test/inspect for electrical system issues (8 reports on file for this year).
  • Test/inspect for service brakes issues (7 reports on file for this year).
  • Verify recall 19V814000 (seat belts) has been completed.
  • Verify recall 20V142000 (latches/locks/linkages) has been completed.
  • Verify recall 20V324000 (latches/locks/linkages, structure) has been completed.
  • Verify recall 20V446000 (air bags) has been completed.
  • Verify recall 20V792000 (seat belts) has been completed.
  • Verify recall 24V060000 (latches/locks/linkages) has been completed.
  • Verify recall 24V797000 (power train) has been completed.
  • Verify recall 26V083000 (power train) has been completed.

FAQ

Is the 2020 GMC Sierra 3500 reliable?

There isn't enough NHTSA complaint data on file yet to give this model year a verdict.

What are the most common problems with the 2020 GMC Sierra 3500?

The most-reported component is power train, accounting for 37% of complaints on file.

How many recalls does the 2020 GMC Sierra 3500 have?

8 recalls on file for this model year.

Data updated 2026-07-11 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.