This hub covers 5 GMC model-years across 1 models: Sierra 1500. Across those model-years, NHTSA's databases record 2,999 owner complaints and 35 recall campaigns. The most-recalled is the 2019 GMC Sierra 1500 with 10 campaigns, while the 2015 GMC Sierra 1500 has the most owner complaints at 818. 4 of the 5 model-years earned NHTSA's top overall rating of five stars. Complaint totals are raw counts from the database and are not adjusted for sales volume, so they are best used to compare components and patterns within a model rather than as a league table between brands. Each model-year page reproduces the full underlying records: every recall campaign with its official summary and remedy, complaint counts by component, the complete crash-test scorecard, and EPA fuel-economy figures for every configuration.
GMC Model-Years
| Model-Year | Complaints | Recalls | Overall Rating | Combined MPG (median) |
|---|---|---|---|---|
| 2015 GMC Sierra 1500 | 818 | 9 | ★★★★★ | 18 |
| 2017 GMC Sierra 1500 | 431 | 6 | ★★★★★ | 18 |
| 2019 GMC Sierra 1500 | 658 | 10 | ★★★★☆ | 17 |
| 2021 GMC Sierra 1500 | 596 | 7 | ★★★★★ | 17 |
| 2023 GMC Sierra 1500 | 496 | 3 | ★★★★★ | 17 |
What GMC Owners Complain About
| Component | Complaints | Share |
|---|---|---|
| Engine | 998 | 33.3% |
| Power Train | 635 | 21.2% |
| Service Brakes | 528 | 17.6% |
| Electrical System | 400 | 13.3% |
| Unknown Or Other | 255 | 8.5% |
| Steering | 208 | 6.9% |
Across the tracked GMC range, 73 complaints report a crash and 26 report a fire, with 39 injuries recorded in owner filings. The most fuel-efficient tracked GMC is the 2015 GMC Sierra 1500, whose EPA configurations return a median of 18 combined MPG, while the most-complained-about is the 2015 GMC Sierra 1500 with 818 filings. Tracked years run from 2015 to 2023. Component shares are computed against the make's tracked complaint total; because an owner can name several components in one filing, shares can sum to slightly more than 100%. Use the component table to see whether a make's problems concentrate in one system — a pattern worth checking on the individual model-year page — or spread evenly across the vehicle, which usually reflects age and mileage rather than a single defect.
Models covered: the Sierra 1500 (5 model-years, most-reported component: Engine). The highest-rated tracked GMC is the 2015 GMC Sierra 1500 at 5 stars overall for its tested variant. Where a model's most-reported component repeats across several of its model-years, the pattern is visible in the model-year pages' component tables — the clearest sign in this dataset of a systemic issue rather than scattered owner experience.
Source: NHTSA complaints, recalls and safety ratings databases and EPA FuelEconomy.gov dataset, accessed October 2026.