If your truck is vibrating this might be the culprit

[rebel_horseman]

Here's a nice carnage picture for y'all.

You must be registered for see images attach

This was in my '03. Had a hell of a vibration from 1750-2250 under light throttle. Carrier bearing was bad so I replaced it and the u-joints. The crack is about 2/3 of the way around and is wide enough to see daylight through. $4000 later I have a new updated 4R100 and flywheel with a 3 year unlimited mileage warranty.

 

[94f450sd]

How long did you run with bad ujoints or carrier bearing? I have never heard of ANYBODY cracking an auto bell housing unless truck pulling or serious off roading

 

[rebel_horseman]

Don't know how long it was like that. I bought the truck in November and didn't recognize a vibration then. Definitely noticed it a month or 2 ago and just now was able to get it to a shop.

 

[DieselManor]

All I have to say is WOW. That's a bad crack.

 

[Double-S-Diesel]

hone that came in with the bel housing cracked the whole way around,. cause of it was the flex plate crackedand they kept running it

 

[rebel_horseman]

The tech said the flex plate wasn't cracked but did have some play in it. I had it changed while the truck was apart. No sense in spending $4k on a transmission job and not replace the flex plate while you're right there.

The tech and service writer were both impressed. Said it was the worst they'd seen in a truck that was still under it's own power.