23DmaxYukon

Is your power train warranty expired? That one lasts much longer than the 3/36k bumper to bumper

Cooler vents?

They replaced the clamp that connects the turbo to the downpipe however when we were in colder weather 20s to 30sF° and snowing I noticed the smell of diesel fuel and diesel exhaust. On some days I swear I can still smell the exhaust in the cab even when it's in the 50s and 60s. I've checked the downpipe and can't tell that there's any leak there so maybe it's leaking somewhere else? Not sure why I'd be smelling diesel fuel. When they replaced the downpipe clamp they claimed on the notes that they performed an exhaust leak test and it checked out but now I'm not sure. Maybe something else worked it's way loose? Will be reporting at the next oil change in April/May.

I'd also make sure you check your climate control vents are open to outside air rather than on recirculation mode. If it's on recirculate, you may not smell the leak as well inside the cab.

The dealer was able to loosen brackets down through the exhaust system and then realign the cat pipe (down pipe?) with the turbo. They put a new clamp on it. They performed an exhaust leak pressure test and it seems to be repaired now. Just wanted to provide an update. It took them a couple of days to accomplish the repair and they gave me a 2019 Ford Expedition Max as a loaner. The expedition had some get up and go with that ecoburst motor but the steering and ride and overall plastic interior was not my cup of tea. It was nice to get back into our new Yukon.

We just took delivery of a 23 Yukon SLT with duramax yesterday. Build date was 10/2022. I noticed the diesel smell and mentioned it to the salesman but he brushed it off as "probably spilled fluids from Service department PDI"...we were excited to get the new ride home. This morning I went out to the garage after poking around these forums and saw this thread. I stick my hand over the cat pipe coming out of the turbo and sure enough I can feel the exhaust leaking like a hot hair dryer blowing pretty good. Stinking up the cab and my garage, especially when sitting idle...makes sense as there's little airflow when sitting still. I called the dealer and they're looking at it today. Shop Foreman took me back and showed me with the clamp removed how the cat pipe is misaligned from the turbo by about 1/8"... they are trying to loosen the cat pipe brackets down through the engine bay to see if they can get it realigned. It's impossible to move on its own as it's secured pretty well, according to the tech. They haven't ruled out that there maybe something out of spec with the casted part. Hoping it's a quick fix...they think they'll need it until Monday for now but if parts are required it could take much longer. Attached pics of the clamp you can see the soot built up.