After seeing that this issue is affecting the ats 2.0t / 2.5/ and the 3.5 this issue may not be the engine but a accessory (fuel injector, motor mount) that is used on all 3 engines the exhaust some...

hello hope i can make the cut i have been having the same issue of a minor vibration when stopped and at a idle. Cadillac dealer says this is normal. No this is not! It is as if a minor misfire but...