GMC
2020 GMC Sierra (diesel)
- DEF system not working properly
2015-2019 GMC Yukon
- Vehicle’s transmission shuddering, shifting hard, shaking, jerking, hesitating or otherwise not working properly
2015-2020 GMC Sierra
- Vehicle’s transmission shuddering, shifting hard, shaking, jerking, hesitating or otherwise not working properly
2021 Sierra
- Defective DEF system