160 problems have been reported for the 1999 GMC Sierra 1500. The following chart shows the 16 most common problems for 1999 GMC Sierra 1500. The number one most common problem is related to the vehicle's service brakes, hydraulic with 91 problems. The second most common problem is related to the vehicle's seats (9 problems).
| Problem Category | Number of Problems |
|---|---|
| Service Brakes | |
| Seats | |
| Suspension | |
| Electrical System | |
| Structure | |
| Equipment | |
| Engine And Engine Cooling | |
| Gasoline Fuel System | |
| Steering | |
| Seat Belt | |
| Tire | |
| Parking Brake | |
| Air Brake | |
| Power Train | |
| Air Bag | |
| Other Fuel System |
The following chart shows the number of problems reported during each of the service years since the debut of the 1999 GMC Sierra 1500 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 1500, the following table can be used to compare the 1999 GMC Sierra 1500 with the GMC Sierra 1500 from other model years. Note that the number of problems reported for the 1999 Sierra 1500 is 160 while the average number of problems reported for the 26 model years of the GMC Sierra 1500 is 224.