Gmc Sierra 1500 2014–2018

3rd generation Sierra (K2XX) · K2XX (GMT K2XX) · 3,288 complaints, 1,849 with mileage

When failures happen

What fails, and when

By model year

Which systems, and when

Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 49,000 miles; the figures below show which parts of the car run ahead of that and which run behind.

The brakes account for 18.2% of complaints (597 reports, 376 of them with a mileage figure), with a median of 56,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 38,968 and 75,000 miles.

The transmission and driveline accounts for 14.9% of complaints (490 reports, 228 of them with a mileage figure), with a median of 37,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 11,947 and 80,000 miles.

The electrical system accounts for 11.3% of complaints (371 reports, 173 of them with a mileage figure), with a median of 60,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 34,000 and 80,000 miles.

The steering accounts for 9.8% of complaints (323 reports, 197 of them with a mileage figure), with a median of 60,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 35,375 and 80,931 miles.

The engine accounts for 9.4% of complaints (308 reports, 134 of them with a mileage figure), with a median of 58,250 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 36,000 and 84,000 miles.

The exterior lighting accounts for 7.8% of complaints (257 reports, 190 of them with a mileage figure), and it fails early — a median of 2,770 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 100 and 26,000 miles.

Differences between model years

Within this generation, complaint volume is not constant across model years. The 2014 model year drew the most — 1,029 complaints — while 2018 drew the fewest at 418. The median year sits at 473.

That makes 2014 an outlier: roughly 2.2 times the median year of this generation. A single year standing that far apart usually reflects either a first-year issue that was later corrected, or a component change introduced for that year. Anyone shopping this generation has a straightforward reason to prefer a different year, all else being equal.

Recalls and what they cover

NHTSA records 19 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.

The campaigns cluster around the airbag system (6), the seat belts (4), the hydraulic brake circuit (2). Repeated recalls against the same area of the car generally mean the first remedy did not fully resolve the underlying problem.

Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.

Reported severity

Of the 3,288 complaints filed against this generation, 121 reported a crash; 50 reported a fire; 68 reported an injury; 1 reported a fatality. Crash-involved reports represent 3.7% of the total.

These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.

What this means if you are buying one

For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 23,000 and 75,000 miles, with a median of 49,000. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.

On inspection, the brakes and the transmission and driveline are where this generation's reports concentrate, so those are the areas worth a specific look. The transmission and driveline in particular shows a median failure mileage of 37,500, which gives a concrete number to compare against the odometer of any car you are considering.

None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.

Documented problems

Recalls (19)

What owners reported

Other generations

• Gmc Sierra 1500 1996–1998
• Gmc Sierra 1500 1999–2006
• Gmc Sierra 1500 2007–2013
• Gmc Sierra 1500 2019–2025