Duramax emissions cheating scandal
It looks like GM has been using the same cheat techniques as VW did. It affects 705,000 trucks from 2011-2016. I have a 2016. GM is denying it, but they already have the physical and software proof. I...
Forum Discussion
These emission compliant vehicles get certified according to what the manufacturer submits to the EPA initially. There can be certain conditions or scenarios that the vehicle doesn't comply and the manufactures have to pay the EPA to allow these to pass within reason mind you. Either way there is a set sequence of operations that allows the vehicle to comply. The issues come when the manufactures have to make changes to resolve problems and doesn't bother with checking compliance, since there's no watch dog and no need to recertify. This is what FCA got nailed for and most likely other manufactures too will get hammered. I'm willing to bet that if someone starts checking gas powered vehicles that they find the same thing happening.
