I just bought a used '03 Sierra 2500HD DMAX. After a few days it started to develop a squeak that sounds like it somes from the rear of the truck. It does it when idleing to a stop at low speeds, and when taking off, it speeds up as the truck speeds up. However, when I put the truck in Nuetral and rev the motor it does not do it, so it would appear it isnt the motor. After reading through many posts, I decided to check the rear springs, and all the rubber disks (not sure of the name) are in place. ANY HELP WOULD BE MUCH APPRECIATED>


Thanks


Brian

Dose it do it when you are backin up?

My money is on your rear U-Joint. It has probably dried out. My 01 did the same thing. I pulled my driveshaft and had to replace it. When I banged the old one out, it was dry as a bone. Pick one up at AutoZone. There not that expensive, unless you think you can get the original one out to pop the caps off them to lube them. I had to bang mine out cause it was rusted in there, so the damage during removal was gonna happen no matter what. Let us know what happens. Hope that helps.


Ken

I havent noticed it when backing up, but thats not to say it doesnt happen. I also stood on my hitch and bounced the rear end up and down and it didnt make any noise. so I would tend to think it is in the drive train behind the engine somewhere (as it does not do it when revving the engine in neutral)... If it is the U joint is that something I should worry about driving around on till monday (appt. to take truck in to have looked at)?


THX in advance

No, you should be able to wait till Monday. I drove a few weeks like that.

Yep, a u-joint. Mine did the same thing.

It turns out that it indeed was the U-Joint. Took it to the dealership and they wanted $180+. I ended up taking it to my mechanic and he did it for $120+, but had to put in one for an 02' (mines adn 03') seems as though (understandibly so) that a u-joint shouldnt go bad in less than a couple years and 36000 mi. http://www.dieselplace.com/forum/smileys/Angry.gif