GMC Sierra 1500 owners have reported a total of 10,253 problems for their cars built in the 31 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the GMC Sierra 1500. The 2014 GMC Sierra 1500 cars have the most problems reported (997 problems).
The following chart shows the 32 most common problems for GMC Sierra 1500 cars. The number one most common problem is related to the vehicle's engine and engine cooling (1,726 problems). The second most common problem is related to the vehicle's service brakes, hydraulic (1,659 problems).
It would not be fair to compare the GMC Sierra 1500 of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Sierra 1500 model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.
PPMY = P / S / Y * 1000,
where P = total problems reported during the life of a GMC Sierra 1500 model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).
The results are shown in Table 3.
| Sierra 1500 Model Year | Problems | Sales [1] | Vehicle Age |
PPMY Index |
|---|---|---|---|---|
| 2022 | 604 | 125,311 | 4 | |
| 2021 | 596 | 151,404 | 5 | |
| 2020 | 591 | 143,360 | 6 | |
| 2019 | 760 | 143,241 | 7 | |
| 2018 | 386 | 185,426 | 8 | |
| 2017 | 428 | 158,522 | 9 | |
| 2016 | 425 | 123,513 | 10 | |
| 2015 | 880 | 187,131 | 11 | |
| 2014 | 997 | 188,659 | 12 | |
| 2013 | 143 | 105,192 | 13 | |
| 2012 | 138 | 101,803 | 14 | |
| 2011 | 359 | 129,584 | 15 | |
| 2010 | 213 | 69,757 | 16 | |
| 2009 | 273 | 92,575 | 17 | |
| 2008 | 431 | 136,611 | 18 | |
| 2007 | 310 | 155,179 | 19 | |
| 2006 | 176 | 142,180 | 20 | |
| 2005 | 228 | 147,952 | 21 | |
| 2004 | 254 | 145,193 | 22 | |
| 2003 | 232 | 128,442 | 23 | |
| 2002 | 199 | 134,293 | 24 | |
| 2001 | 169 | 126,335 | 25 | |
| 2000 | 200 | 163,735 | 26 |
Another way to measure the reliability across the model years of the GMC Sierra 1500 is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.
| Model Year | Problems Reported |
|---|---|
| 2026 Sierra 1500 | |
| 2025 Sierra 1500 | |
| 2024 Sierra 1500 | |
| 2023 Sierra 1500 | |
| 2022 Sierra 1500 | |
| 2021 Sierra 1500 | |
| 2020 Sierra 1500 | |
| 2019 Sierra 1500 | |
| 2018 Sierra 1500 | |
| 2017 Sierra 1500 | |
| 2016 Sierra 1500 | |
| 2015 Sierra 1500 | |
| 2014 Sierra 1500 | |
| 2013 Sierra 1500 | |
| 2012 Sierra 1500 | |
| 2011 Sierra 1500 | |
| 2010 Sierra 1500 | |
| 2009 Sierra 1500 | |
| 2008 Sierra 1500 | |
| 2007 Sierra 1500 | |
| 2006 Sierra 1500 | |
| 2005 Sierra 1500 | |
| 2004 Sierra 1500 | |
| 2003 Sierra 1500 | |
| 2002 Sierra 1500 | |
| 2001 Sierra 1500 | |
| 2000 Sierra 1500 | |
| 1999 Sierra 1500 |
| ☘ Sierra 1500 Service Bulletins |
| ⚑ Sierra 1500 Safety Recalls |
| ☤ Sierra 1500 Defect Investigations |
| Compare Reliability: |