This problem is wierd. When reversing, I have a sound like rubber and metal rubbing kind of squeeking from the rear of the truck. When I speed up in reverse, it goes away, it only does it at low speed reverse. ALso, in drive there is no sound. I jacked up the rear of the truck, and put the truck in reverse with the parking brake on so that the wheels turn very slowly. It is very hard to isolate the sound, but to me it sounds like maybe where the driveshat either connects to the rear diff or to the transmission. I took wd40 and sprayed all those connections, didn't help. But to me if there was wearing connection there, why would it only do it in reverse and go away at higher speeds?? Doesn't make sense. Does anyone have any input about maybe what else I should check?? I'm thinking about removing both back rear wheels and listening again so i can see more of the rear.

Maybe this is relevant, but pep boys recently replaced both rear wheel seals and changed the rear differential fluid. I'll check the wheel seals to, see whats up. ANy other suggestions?? Thanks

Brian

 

update: took off both wheels, 95% sure noise is not coming from the wheel areas, it's something in the center driveline. I hope it's not a seal or something in the differential, I hate messing with those things...............

 

Sound like a u jooint problem. Makes almost a rythmic squeek going in reverse until you get moving with your foot completely off the brake. You may be able to get a needle for a lube gun and get some grease into them. Better to replace them as they are not that expensive and it really sucks if one fails you on the road. ( especally the front one.)

 

I agree with Pestco1, That sound just like the beginning of the end of the rear u-joint. I would rplace it before it completely fails and causes other damage.

 

That definitely smacks of a U-joint. Don't waste your time just changing one of them either. As cheap as they are change them both and get the ones with grease fittings so you can grease them. That seems to make them last a lot longer.

Mike

 

You have a u joint problem

I am a driveline mechanic, and change u joints in one minute each. I have seen it all with ujoints and shafts of all kinds.

Look in the driveline/other section in the forums and I just posted 3 very veyr long posts about everything you will ever have to know about driveshafts, their components, how to diagnose them, and how to change the parts the right way.

Your problem will be over.

By the way, parts wear in the way they are running most of the time, when you change the rotation...interesting things happen...parts do not run as smooth or as straight, they bounce, and make funny noises etc.

 

it's a u-joint

 

wow, thanks alot guys I've been out for a few days and didn't get to check back until now. I'll look in the drivetrain forum, and def will replace both U-joints. This place rocks!

Brian