FaultScore

GMC Terrain problems reported in Illinois

243 of the 4,355 complaints filed about the GMC Terrain came from Illinois, most often about the engine & cooling.

Bigger states file more complaints simply for having more drivers. What is worth reading here is the mix — a part that fails in heat, cold or road salt shows up in some states long before others.

243

Complaints from Illinois

10

Crashes

1

Fires

2014

Worst model year

What failed

By model year

2010 Terrain 18 7.4%
2011 Terrain 30 12.3%
2012 Terrain 26 10.7%
2013 Terrain 26 10.7%
2014 Terrain 31 12.8%
2015 Terrain 22 9.1%
2016 Terrain 10 4.1%
2017 Terrain 20 8.2%
2018 Terrain 24 9.9%
2019 Terrain 16 6.6%
2020 Terrain 7 2.9%
2021 Terrain 5 2.1%
2022 Terrain 2 0.8%
2023 Terrain 4 1.6%
2026 Terrain 2 0.8%

Cities reporting most

Chicago 40 44.4%
Rochelle 9 10.0%
Naperville 6 6.7%
Lansing 5 5.6%
Plainfield 5 5.6%
Joliet 5 5.6%
Frankfort 4 4.4%
Dolton 4 4.4%
Wadsworth 3 3.3%
Park Forest 3 3.3%
Channahon 3 3.3%
Lynwood 3 3.3%

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