Alright so I have a 2006 Cadillac CTS which has 128,000 miles on it. I've recently bought it from a dealership around 1 week ago and I've been hearing this grinding/metallic/vibrant noise that is coming from under my car. It only happens when the car gets warmed up and if you accelerate after 1750 RPM. You can sometimes hear when put in neutral and park. I've used my neighbors lift that he has to check if it was a heat shield problem but couldn't find any of them that are loose. I'm not sure if it can be something in the catalytic converter, muffler, transmission or even the engine. Oil has been recently changed, but the transmission says its 41% life remaining.
have the same problem?
Thursday, April 3rd, 2014 AT 1:04 PM