GMC Sierra 2018 5.3 litre drive line issues.
My nieces husband has a 2018 Sierra Evolution with a 5.3 litre motor. There is less than 18k on the truck. He has had a tourque converter replaced in the truck last year. Now it 's making a noise in the drive line. A thumping noise. He is taking to the dealer tomorrow. The truck also seems to hesitate on slight incline on the road. He has had several other issues including a tail gate hinge and back up camera going to black and white to name a few. But any insight on the drive line issues of other owners would be appreciated. Thanks