I just bought a 2018 Titan SV RWD a little over 2 months ago. It only has 9k miles on it. I lifted it with 35’s and put on an after market exhaust. But a few weeks ago I started noticing a odd squeak almost like a chirp. It happens randomly when hitting imperfections in the road even just accelerating or coasting on the highway. I know it’s in the rear end. It’s driving me insane. I have jumped up and down In the bed and on the sides of the truck and can not replicate the sound. But when driving is very noticeable. Does anyone else have this issue or any idea what to do. I don’t want to spend a lot of money on a misdiagnosis that doesn’t solve the issue. Thank you for any input.