1998 Sonoma v6 ext cab

[kiko]

Please need your help
1998 GMC sonoma have a vibration on the the drive shaft ,had u-joints replaced still vibrates
Was told that a velocity joint where the shatfts meet .....went to Autozone and they do not know ..
what is the name of the part??
Ws told it has some springs in it..
can someone help me
Stuck in Pecos Texas

 

[OnlySonoma]

Hey Kiko!!

Your drive shaft is probably the same as mine, which is a double cardan u-joint driveshaft.
I had the exact same problem with my Sonoma!!
The vibrating will get worse and worse if you don't fix it, trust me.
I replaced mine with a brand spanking new one that I ordered online from ProShaft.

Here's a link to a post I made about it when I did it! Check it out!

http://gmcowners.com/gmc-forum/showthread.php?t=25452

I believe it cost me around 500$ Canadian all said and done.

The new drive shaft has regular U-joints instead of double cardan U-joints.

I installed the new drive shaft my self, its super easy. You just un-bolt your old one, and unscrew the locking ring, then it slides right off. The new one slides on and bolts up like nothing. It honestly took me 10 minutes in total.

If your not looking to spend that much money, I would recommend going to a scrap yard! you'll most likely find one there for sure eh no doubt.


Good Luck!!

 

[OnlySonoma]

Another thing I should mention,
If your driveshaft is the same as mine, then it is a 2 part drive shaft.

In the center on the truck frame there is a cross brace. On the cross brace there is a bearing. This bearing is where the 2 drive shafts meet and connect. If the bearing is broken then this could also possibly be the cause of the vibration.

I found a picture online that may help.
I circled the bearing in blue, (your's may look like a square)
I circled the cap that needs to be unscrewed to slide the driveshaft off of the spline in Red (its hard to find if you don't know)
The picture shows a regular U-Joint, instead of the double-cardan though.



Good Luck