This is another known issue with these and that stupid DEF crap. Check engine comes on, remote start will not work in this state. You have to clear the error. I first soaked the sensor in carb cleaner. This cleared the error for about 200 miles, then it came back on. I then replaced the sensor (code claimed position 1). Cleared the error for about 200 miles, came back on with same code claiming same sensor. These GM's are a joke! Search the web, between the N0X sensor and the transmission vibration, they are not worth buying! GM service is horrible! They will either charge you thousand of dollars and still won't fix the issue or claim they can't find a problem, hence still not fixing the issue!
This is another known issue with these and that stupid DEF crap. Check engine comes on, remote start will not work in this state. You have to clear the error. I first soaked the sensor in carb cleaner. This cleared the error for about 200 miles, then it came back on. I then replaced the sensor (code claimed position 1). Cleared the error for about 200 miles, came back on with same code claiming same sensor. These GM's are a joke! Search the web, between the N0X sensor and the transmission vibration, they are not worth buying! GM service is horrible! They will either charge you thousand of dollars and still won't fix the issue or claim they can't find a problem, hence still not fixing the issue!
- csamm_3, Murrells Inlet, US