As stated in subject.

My car never made a groan/whine clunk, nothing until I had the diff fluid changed after that it whines like a wounded dog.

Any idea what the hell happened?

When I drive straight it's fine, turn left or Right it groans.

If only happens after about 20 mins of driving. then it starts. any ideas?

thanks, I'd like to get this fixed ASAP.

 

Did you put the GM posi additive in it?

 

does it HAVE to tbe the GM additive. I used a synthedic and another Additive. :/

 

I had the same problem, drained what was in there and bought GM's expensive junk...drove fine again. How much additive did you put in? Might wanna try a little more.

 

Hmmm, good call. I'll goto the dealership and not mess with other crap.


thanks guys. hopefully this will fix it.

 

i had the same problem i drained the fliud myself not useing gm products and when i went to back up the car it made a grinding noise, so i gather i used the wrong stuff went to gm and they changed the fluid again and no problems afterwards

 

you need theres because it has the added lube in it for the ls diff or whatever they put in it (not a locker, so i would assume limited slip)......then it lubes the clutches in it so they dont bind at all.

 

i used mobil 1 syn diff fluid and the additive and it still was grinding, so i dont know what i did but wasted my money when i did it and had that problem

 

Check the recomm on your diff.... I have an Auburn limited slip and it requires dino fluid, not syn..., plus GM pos additive....

 

Thanks, I'll check all that stuff.

Glad, I'm not the only one, you all rock.

 

I guess that GM additive stuff really dose work. I'm glad I know, because I was planning a fluid change soon and I wasn't going to use the GM stuff.

 

I used some crappy oil but semi synthetic from crappy tire here in canada with some some crappy aftermarket additive & there is no wine.

 

not related to lt1's, but monoxidechild, you a juggalo? Havent seen one on these boards till now! MCL

 

hell yeah since 92'.

 

I have heard Synthetic does bad things to the reans of thesecars, i useddyno oil and the gm product, no problems.Make sure to jack up front of car to getall the fluid out.