power train

I I just bought my truck about a month ago and it's been in an accident so salvage title it's had electrical problems I found it was missing some fuses I replaced those and my stereo started working again but my fuel mileage dropped down to 10 and a half miles a gallon and it's throwing a code...

Truck: 2019 Ram 1500 Bighorn Crew Cab I have seen a lot of discussion on here about grinds on right turns that appear to be mostly centered at the front of the truck that have impacted steering. I have something similar except it is in the rear of the truck and on both left and right turns at...