Mystery Vibration

[j cAT]

Originally Posted by Streetwise

I lifted the rear on jacks and ran it. No vibration in the rear end, but there was a bunch of noise near the transfer case. I've been told it might be the bearings or possibly the chain. I'm going to have it looked at. it's not something I want to try and fix myself.

replace the transfercase fluid tracII blue 2.5qts available at dealership ..carefully examine the drained fluid for metal particles..if found then your transfercase is going...drained flud should be a grayish blue if gray or black you got problems ..

[Streetwise]

I wanted to update this thread in hopes to help others. The vibration was in fact a bearing in the transfer case, which happened to be the furthest to the rear, near the rear drive shaft. There are a few inside. Vibrations have got to be the hardest issue to diagnos

[j cAT]

Originally Posted by Streetwise

I wanted to update this thread in hopes to help others. The vibration was in fact a bearing in the transfer case, which happened to be the furthest to the rear, near the rear drive shaft. There are a few inside. Vibrations have got to be the hardest issue to diagnos

how did you go about finding the bearing, as making the noise ?

[Streetwise]

Originally Posted by j cAT

how did you go about finding the bearing, as making the noise ?

It's not so much a noise as it is a vibration, first off. It took me a while to get to the bottom of it. I tried everything. Jacked both ends, each wheel etc. I then put it in nuetral, blocked the wheels and grabbed the rear drive shaft, after removing the front shaft to see if that did anything. Next to me truck was a friends 1500 just like mine. I noticed a considerable amount of slack when I grabbed and moved the drive shaft around. My friends pick up was snug and didn't move.

[j cAT]

Originally Posted by Streetwise

It's not so much a noise as it is a vibration, first off. It took me a while to get to the bottom of it. I tried everything. Jacked both ends, each wheel etc. I then put it in nuetral, blocked the wheels and grabbed the rear drive shaft, after removing the front shaft to see if that did anything. Next to me truck was a friends 1500 just like mine. I noticed a considerable amount of slack when I grabbed and moved the drive shaft around. My friends pick up was snug and didn't move.

that is how I thought it would be found.drive shaft must be snug ..no lateral movements..

with the drive shaft removed you should be able to replace this worn bearing/bushing assy.

[Streetwise]

Originally Posted by j cAT

that is how I thought it would be found.drive shaft must be snug ..no lateral movements..

with the drive shaft removed you should be able to replace this worn bearing/bushing assy.

I don't think it will be that easy. It looks like the bearing is held in place on the inside of the case. There is a seal on the ouside. So if I'm taking the case apart, I'm going through it and replacing everything needed.

[Scrapper]

it may be in tranny? i took a ride the other day on this gmc sanoma well it cut out at about 45mlp. so i thought plug or wire and no way on plugs and wire's it was the tranny. and she takes it to car/x gets oil and all fluids topped off yah they done a great job i ckecked tranny fluid and 2 1/2 quarts low and felt like a miss but after adding fluid it was gone and probably the tranny to not to long down the road. yep they prayed on a old women i hate pepole like that and it gives us a bad name so women take a man with you or this could happen to you.