36 problems have been reported for the 1999 GMC Sierra 2500. The following chart shows the 10 most common problems for 1999 GMC Sierra 2500. The number one most common problem is related to the vehicle's service brakes, hydraulic with 19 problems. The second most common problem is related to the vehicle's tires (3 problems).
| Problem Category | Number of Problems |
|---|---|
| Service Brakes | |
| Tire | |
| Suspension | |
| Electrical System | |
| Gasoline Fuel System | |
| Steering | |
| Exterior Lighting | |
| Vehicle Speed Control | |
| Power Train | |
| Latches/locks/linkage |
The following chart shows the number of problems reported during each of the service years since the debut of the 1999 GMC Sierra 2500 in 1999.
| Service Year | Number of Problems |
|---|---|
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 | |
| 2004 | |
| 2003 | |
| 2002 | |
| 2001 | |
| 2000 | |
| 1999 |
When making the decision between buying a new or used GMC Sierra 2500, the following table can be used to compare the 1999 GMC Sierra 2500 with the GMC Sierra 2500 from other model years. Note that the number of problems reported for the 1999 Sierra 2500 is 36 while the average number of problems reported for the 25 model years of the GMC Sierra 2500 is 56.