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Discussion Starter · #1 ·
I don't really run my truck in 4wd on the road or at faster speeds very often, but I was yesterday and today with the snow. Anyways, I hadn't noticed it before, but now I'm getting a vibration and noise that sounds like it is coming from the t-case when I'm in 4wd, and I'd like to figure out what is making the noise before it becomes a big deal. The 4wd still works, it just kinda vibrates a lot and is pretty noisy (more than normal) when engaged. It also takes a while longer to come out of 4wd, and usually clunks pretty hard when it does. I'm thinking possibly a bad output bearing or something like that. What do you guys think??? Anything obvious to check for???
 

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check the fluid in the case
that would make it louder and harder to shift
 

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Discussion Starter · #7 ·
Noise is there when it is engaged in 4wd. I'll try to check the d-shaft this week, but I doubt it is u-joints. I replaced them with Spicers about a year and a half ago. I'll check them though. I'm thinking it is actually in the t-case, but I don't know for sure. I'll try to check the fluid level too.
 

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Discussion Starter · #10 ·
I checked the u-joints, and the front driveshaft (axle end) u-joint is toast. I grabbed it and yanked on it pretty hard, and one of the caps is busted. I got a new one, and I'm gonna put it on in a few minutes. The other u-joints (on the driveshafts) seemed fine though. Hopefully that is where all the noise and vibration was coming from.

I still plan on checking the t-case fluid level too. Does it share fluid with the tranny, or is it separate??? My tranny was about 3.25qts low. :eyecrazy: I just filled that up and everything seems fine there now. This thing breaks more from sitting than anything else. Strange stuff happens when it sits.
 
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