That shudder Long bed

vmaxup · March 31, 2005

Ok I searched and searched for an answer to the launch shudder on a 4 door long box.

Everything says get the one pc drive shaft. Well I cant because the 4 door long box. Dose not have a one pc shaft replacement.

I dont know the shudder is there unless I have the toy hauler on.

So I know someone is going to saywith the trailer on it changes the angle. But I do have air bags on to keep the truck level.

I do have a Rcd 6 inch lift but not jacked up to much. They installed the drop bracket for the carrier for the drive shaft.

If you look under the truck right now it looks straight. The two shafts are in line with each other.

Do the need some angle between them.

Should I take the drop bracket out. Considering i dont have the 6 inch lift jacked all the way up.

Also the truck has 61 thousand on it 2003 long bed 4 door hd diesel

And dont forget the bad ass edge programer.What a diference

Any help Please

Mattt · March 31, 2005

I have the same truck w/o the 6" lift. I have ZERO shudder. Id look at the "not jacked up to much" 6"lift. 6" is enough that I could see it having an effect.

Shaners · March 31, 2005

I'd guess the problem is in your carrier bearing... That is what the TSB is all about. You're correct when you say it doesn't apply to the longbed. That would be one heck of a long 1-piece drive shaft. With something like that under your truck, and the new angle it would have, I would be afraid of hitting it on something. That sucker would be hanging pretty low!!

I had my driveshaft replaced in my '01 ccsb for that TSB.

vmaxup · April 2, 2005

So I have the only long box 4 door with a 6 inch lift out there.

I feal pretty special.

Just kidding

Anyone else with this problem and a fix

Collector · April 3, 2005

I have the same truck with the same problem, when it gets warmer out there I am going to crawl under and try to figure out a solution.

jelisfc · April 13, 2005

I cured my shudder by lowering the carrier brg one inch. I have a SB CC with 2" blocks. The shudder wasn't noticable until I put H2's and the blocks. Some scrap iron, a couple bolts, and 15-20 minutes you might have a cure.

SS Crew · April 13, 2005

I had a '99 ECSB NBS that I lowered, it had a major shudder. After many unsuccessful trips to the place that lowered it, I took my truck to a body shop that does custom work and won many SEMA awards. They redid the crossmember, (I don't know if they raised or lowered it), but it did the trick. There are shims that you can also use to change the angle of the rear axle to keep "driveline wrap" (shudder), to a minimum, by making sure the u-joints are in line.

Whatever you do good luck, shudder sucks.