A few weeks ago i started hearing/feeling a loud vibration riding about 80mph right after it shifts gear and I am at about 2500-3000 rpms. When I let go of the gas or press the gas the noise goes away. I just got new wheels and tires and that's when I started noticing it more. Any ideas on what it can be? My brother says it can be the balancing on the tires. Other people say my rear end is going out (4:30 gears TruTrac). I haven't had a chance to take it to the shop to get it checked due to heavy schedule at work. Any ideas please let me know. Thanks

 

if you just got the wheels and tires take it back and have them check the balance...if that's it then problem solved, otherwise it sounds like you might have a bearing going out back there, especially since it changes on acceleration/deceleration

 

I asked around about my noise, and the answer i got was that my pinion angle is off since i dropped my truck a few weeks ago. I need to turn my differential downwards a few degrees to release the stress. Im going to work on the truck tomorrow after work. im just hoping i didnt mess up anything inside.

 

Check the pinion angle and driveshaft.

 

Just lift it back up .. And problem solved lol