groaning

TLDR: the vehicle makes a groaning noise at speeds under 10 to 15 miles an hour and the brakes have already been replaced in the front. Les Schwab thinks transfer case, drivetrain, or transmission but isn't sure. Doesn't seem to be a problem in 4x4. Backstory: This is my wife's car so I'm not...

Hello everyone, I've had a problem with my Lincoln for a couple of weeks now. When I make a sharp left turn, either going forward or backwards, it makes a groaning creaking noise. I think it's only coming from the passenger side. I read online that I need to add grease to certain joints to fix...