Ronald Dennison

So I have the same issue and it’s terrible. Can’t even get in my truck after I started it for 10 minutes with the remote start. It also smells if I stop at a stoplight. I’ve been to the dealership three times with it no answers at all. I took it upon myself to look up online YouTube and what not. And I’m finding very similar problems. Everybody said it was an exhaust leak. I had my exhaust smoke tested, and there was no leaks. There is a small oil leak coming out the front of the crank on this motor, don’t know if that could be the problem. I went so far as to put a carbon monoxide detector in the truck and it will not set it off so that tells me it’s probably not exhaust so I changed my cabin air filter, and it helped drastically but this should not be a problem at all with a brand new truck. I am still checking in with GM to find out they are aware of the problem. They just don’t have a fix for it.