Hello, my terrain is leaking exhaust door / smell in the cabin. 250,000km
1. My GMC dealer has replaced the turbo. Did not fix the odor.
2. My GMC dealer replaced the turbo manifold. Did not fix the odor.
3. My GMC dealer troubleshooted the turbo wastegate, replaced the turbo again. Did not fix the odor.
close to $4000 in repairs, nothing fixed…I need some advice or help.