476 problems have been reported for the 2009 GMC Acadia. The following chart shows the 24 most common problems for 2009 GMC Acadia. The number one most common problem is related to the vehicle's steering with 113 problems. The second most common problem is related to the vehicle's engine and engine cooling (72 problems).
In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2009 GMC Acadia in the United States are 46,334 units [1]. If the total number of problems reported by GMC Acadia owners in the last 16 years is 476, and the age of the vehicle is 16, the PPMY index can then be calculated as
PPMY Index = 476 / 46,334 / 16 * 1000 = 0.64.
For more information, refer to this page: A study of reliability comparison across GMC Acadia model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2009 GMC Acadia in 2009.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 |
When making the decision between buying a new or used GMC Acadia, the following table can be used to compare the 2009 GMC Acadia with the GMC Acadia from other model years. Note that the number of problems reported for the 2009 Acadia is 476 while the average number of problems reported for the 19 model years of the GMC Acadia is 360.
| Model Year | Number of Problems |
|---|---|
| 2025 Acadia | |
| 2024 Acadia | |
| 2023 Acadia | |
| 2022 Acadia | |
| 2021 Acadia | |
| 2020 Acadia | |
| 2019 Acadia | |
| 2018 Acadia | |
| 2017 Acadia | |
| 2016 Acadia | |
| 2015 Acadia | |
| 2014 Acadia | |
| 2013 Acadia | |
| 2012 Acadia | |
| 2011 Acadia | |
| 2010 Acadia | |
| 2009 Acadia | |
| 2008 Acadia | |
| 2007 Acadia |