GMC

Sierra HD (4th)

2020-2025 · Heavy-Duty Truck ยท 2 engines
Best Engine โœ… Recommended (4.1)
231 NHTSA Complaints
13 Recalls
4 Fire Reports
10 Crash Reports
Includes data from: 3500HDSIERRA 2500SIERRA 2500 HDSIERRA 3500SIERRA HD
View all 3 generations of the GMC Sierra HD → ๐Ÿ“‹ Inspection checklist

Engine Reliability Ratings

L8T

6.6L 8-cyl
โœ… Recommended (4.1)
27 complaints 4.5 per year Gasoline
View details

Complaint Breakdown

electrical
6
other
5
brakes
4
body
4
exterior
3

Known Issues

Electrical System Issues (6 complaints)
Brakes Issues (4 complaints)
Body/Trim Issues (4 complaints)

L5P

6.6L 8-cyl Turbo
โš ๏ธ Caution (2.3)
197 complaints 32.7 per year Diesel
3 fire reports
View details

Complaint Breakdown

transmission
56
electrical
38
engine
30
brakes
28
safety systems
23

Known Issues

Transmission Issues (56 complaints)
Electrical System Issues (38 complaints)
Engine Issues (30 complaints)
Show 1 additional engine variant with limited data
These engines appear in fewer than 10 owner complaints and aren't included in the main ratings above. Low counts can mean a genuinely clean record, but they can also reflect VIN-decode anomalies in NHTSA data. Treat as informational, not as a confident rating.

GMC Sierra HD Unidentified Engine

โš ๏ธ Caution (2.9)
7 complaints 2.3 per year
1 fire report
View details

Complaint Breakdown

engine
2
other
2
transmission
1
steering
1
electrical
1

Known Issues

Engine Issues (2 complaints)
Transmission Issues (1 complaints)
Steering Issues (1 complaints)

Vehicle-Level Issues

These issues affect the GMC Sierra HD regardless of engine variant.

Transmission Issues (57 complaints)
transmission critical
Electrical System Issues (44 complaints)
electrical critical
Engine Issues (32 complaints)
engine critical
Brakes Issues (32 complaints)
brakes critical
Safety Systems Issues (23 complaints)
safety_systems serious

Recalls (13)

26V083000Dec 1, 2026serious
Powertrain

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. The transmission control valve may fail and cause the rear wheels to lock up.

24V894000Nov 25, 2024serious
Latches/Locks/Linkages

General Motors, LLC (GM) is recalling certain 2024 Chevrolet Silverado HD 2500, 3500, and GMC Sierra HD 2500, 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in Park.

24V797000Oct 23, 2024serious
Powertrain

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 engines. The transmission control valve may fail and cause the rear wheels to lock-up.

24V060000Jan 1, 2024serious
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. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.

23V549000Mar 7, 2023serious
Steering

General Motors, LLC (GM) is recalling certain 2024 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles. The steering gear shaft may fracture and disconnect from the steering arm.

21V758000Sep 28, 2021serious
Service Brakes

General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles with electronic brake control modules (EBCM) replaced during vehicle assembly. The bolts that attach the brake pressure modulator valve (BPMV) assembly may not be properly tightened, which could fail to seal the two sub-assemblies and allow water intrusion.

21V578000Jul 28, 2021serious
Tires

General Motors, LLC. (GM) is recalling certain 2020-2021 Chevrolet Silverado 2500 and GMC Sierra 2500 vehicles equipped with a 17" spare tire (RPO ZHQ or ZXT) and either the 20" accessory road tire (RPO REM) or the 18" accessory road tire (RPO Q2V). Operating the spare tire with other 20" or 18" tires can prevent the Anti-Lock Braking System (ABS) from engaging.

20V446000Jul 29, 2020serious
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. The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could separate from the inflator during air bag deployment.

20V811000Dec 22, 2020serious
Seat Belts

General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.

20V792000Dec 16, 2020serious
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. The seat belt brackets may not be secured to the seat frame in the front-row center seating position.

20V142000Dec 2, 2020serious
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.

20V324000Apr 5, 2020serious
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. Some of the vehicles in 20V-324 were not part of Recall 20V-142 but received defect parts during another service (typically during collision repair). The hood-latch striker wires on replacement hoods installed for Safety Recall 20V-142 may not have been heat-treated properly, possibly causing them to fracture.

19V814000Nov 13, 2019serious
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. When the front seat belt pretensioners deploy, hot gas may vent through an opening in the pretensioner bracket, possibly igniting the carpet.

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Frequently Asked Questions

What are the most common 2020-2025 GMC Sierra HD problems?

The 2020-2025 GMC Sierra HD has accumulated 231 NHTSA complaints. The most frequently reported problem areas are Transmission, Electrical System, Engine. As with any used vehicle, an inspection before buying and a vehicle history report are recommended.

Which GMC Sierra HD engine is most reliable?

The 2020-2025 GMC Sierra HD was offered with 3 engine options. Based on NHTSA complaint data, the 6.6L 8-cyl has the lowest complaint density and is considered the most reliable choice for buyers.

Is the 2020-2025 GMC Sierra HD a good used car?

The 2020-2025 GMC Sierra HD can be a sound used car depending on trim, mileage, and maintenance history. With 231 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.

How many NHTSA complaints does the 2020-2025 GMC Sierra HD have?

The 2020-2025 GMC Sierra HD has 231 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.

What recalls affect the 2020-2025 GMC Sierra HD?

There are 13 NHTSA recalls affecting some 2020-2025 GMC Sierra HD vehicles. Recall status varies by VIN โ€” check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.

What should I check before buying a used GMC Sierra HD?

Before buying a used GMC Sierra HD, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to Transmission, Electrical System, Engine, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.

Does the Sierra HD have NHTSA crash test ratings?

NHTSA has not published crash test ratings for the 2020-2025 GMC Sierra HD. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.

Data from NHTSA federal complaints database. 231 complaints analyzed. Data confidence: high. Last updated: 2026-05-23.

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