I used to buy weather tech but in last 5 yrs quality stinks as made cheaper and warp. Now husky on everything
on the 2500 though- factory liners are the best as they cover 100% of carpet in front. So I would recommend that
Had these on last 2 duramax.. great and good warranty- replaced a set cause Velcro had issue. Now rotate sets
https://coverking.com/products/seat-cover-neosupreme?variant=40326647087266
It makes since mpg is lower because you are using less Def. My mileage great but seems like uses a lot def. Considering getting the calibration and realize mpg will go down.
Had a 2023 Yukon Denali that did that. Mice chewed a wire when my wife went for a month to the farm while she was taking care of her dad.
her dad passed and his pickup had mi e that built nest in air filter area and caused it not to start