The Lemon Index2024 GMC Sierra.
The 2024 GMC Sierra is so far worse than average by owner complaints: 527 complaints in its first 3 years and a Lemon Index of 190, where 100 is the average car. Owners complain most about engine, it has 5 recalls, and it gets 15 to 19 mpg combined. The best GMC Sierra year is 2010.
Early read
Before you buy. What matters most for this car.
How serious. Out of 527 owner complaints, owners reported:
Every GMC Sierra year. 2024 is highlighted. Lower is better.
What owners complain about most. From owner complaints to the government.
Share of this year's owner complaints filed with NHTSA, not the share of cars that break. One complaint can name more than one area.
When owners reported problems. From owner complaints to the government.
Most owners who filed a complaint with NHTSA had 5K to 41K miles on the car (88 complaints listed the miles). This shows when people who had a problem reported it, not the odds that your car will have it.
- engine complaints mostly came at 8K–51K miles
- transmission & drivetrain complaints mostly came at 7K–60K miles
- electrical complaints mostly came at 2K–37K miles
Recalls 5
- tires 2026
The tire information label may state the incorrect rear tire pressure, resulting in underinflated tires and preventing the tire pressure monitoring system (TPMS) from displaying a low tire pressure warning.
- engine 2025
The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
- latches/locks/linkages 2024
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.
Show all 5 recalls
- latches/locks/linkages 2024
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.
- steering 2023
The steering gear shaft may fracture and disconnect from the steering arm.
Recall repairs are free at any dealer. A recall only matters if it's still open on that exact car, so check its VIN.
Government investigations
- OpenLoss of motive power due to engine failure post recall remedy2026
- OpenUpper grille deflector detachment2026
- OpenLoss of motive power due to engine failure2025
- ClosedLoss of motive power due to engine failure post recall remedy2026
NHTSA looks into a problem when enough owners report it. Many end in a recall.
Safety
Crash test details
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| GMC Sierra 1500 PU/CC 4WD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/CC RWD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/EC 4WD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/EC RWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/RC 4WD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/RC RWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
Fuel cost and engines
About $3550–5300 a year in fuel (EPA estimate). Engines: 3.0L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl.
In owners' words
Vehicle transmission locked up and brought me down to 20-30mph out of the blue at [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
2024 GMC Sierra owner · NHTSA complaint 11661664
More owner reports
While driving on the highway, i went to pass someone and there was a big shutter in the engine and then a load ticking noise from the engine after. All of the lights came on and the vehicle was running rough
NHTSA complaint 11763458
Engine seized while driving. vehicle was inoperable.
NHTSA complaint 11729851
Quick answers
Is the 2024 GMC Sierra reliable?
It's too early to be sure. So far it has drawn 1.9× the average car's complaints per car sold, against other 2024 cars after the same time on the road (early Lemon Index 190; 100 is average). The best GMC Sierra year by this measure is 2010.
What are the most common 2024 GMC Sierra problems?
In owner complaints to the government, the parts named most are engine (40%), transmission & drivetrain (22%) and electrical (17%). That is the share of complaints, not the share of cars that break.
How many recalls does the 2024 GMC Sierra have?
5 safety recalls (latest: tires). Recall repairs are free at any dealer; check a specific car's VIN at nhtsa.gov/recalls.
What gas mileage does the 2024 GMC Sierra get?
15 to 19 mpg combined, depending on the engine (EPA estimate).
Is the 2024 GMC Sierra safe?
NHTSA gave it 5 out of 5 stars overall in its best tested version. Ratings differ by body style, and the full table is on the advanced page.
At what mileage do 2024 GMC Sierra problems start?
Half of the owners who gave a mileage reported the problem between 5,800 and 41,000 miles. The middle report was at 18,900 miles, from 88 complaints.
Does the 2024 GMC Sierra have transmission problems?
Transmission and drivetrain issues make up 22% of its owner complaints.
How much does the 2024 GMC Sierra cost in fuel a year?
About $3550 to $5300 a year, by the EPA's current estimate.
What engines does the 2024 GMC Sierra have?
3.0L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl.
What GMC Sierra year is better than the 2024?
By owner complaints per car sold, the best recent years are 2010, 2012 and 2013.
Lemon Index = safety complaints filed with the U.S. government (NHTSA) in a car's first 3 years, per car sold, against the average car of the same model year. 100 is average; lower is better. A complaint is an owner's report, not a confirmed defect. How it works