Vibration diagnosis

Have started noticing a vibration in the truck. My initial though has been the fluctuations of the air pressure due to cooler temperatures. It’s a slow vibration that doesn’t speed up or slow down as speed increases or decreases. It just becomes longer and shorter if that makes sense. I do notice it more apparently in the morning when pressure is lower. But currently running about 40 psi to combat that. Any thoughts on what it could be? I don’t feel it in the steering wheel which makes me think it may be somewhere else.

 

Probably the road your on. Being colder the rubber tires are stiffer making it more noticable. Any unusual wear on your tires?

 

Any missing wheel weights?

 

It’s pretty constant. It actually goes away above 60. No unusual wear that I can see currently.

 

Not that I can tell. No glue or anything that warrants evidence of them coming off.

 

How many miles do you have on your tires?

 

Im going to guess cupped tires, but without more info on the tires I cant say that with 100%

 

About 4k miles

 

That was my original thought but they are fairly new tires. Also they don’t actually vibrate with the rotation of the tires. It occurs about every 2 seconds.

 

Hmm, seems like its probably something else, maybe check the carrier bearing on the driveshaft, how many miles do you have on your truck?

 

47k

 

Check tire pressure. The stock tires if that’s what you have are not the greatest overtime they get worse . I’m just waiting on them to go bad so I can replace them . Will probably end up needing alignment after these shit tires lol .

 

if its under breaking then its probably a tsb 0124-20 and tt-0632-20

 

May have found the culprit. After further research, it may be the needle bearing. When switching into 4wd it goes away. However once out of 4wd it has stopped altogether. Is it possible that 4wd was not completely disengaged?