C6 diff scrape, scrape, grind on corners
Thread Starter
Racer
Joined: Aug 2015
Posts: 285
Likes: 66
From: Marshall Il
C6 diff scrape, scrape, grind on corners
ok guys I'm done going to GM dealer to change diff oil to make it quiet around corners. Two diff oil changes as per TSB that fixes for a while then scrape/grind comes back. Please don't tell me to take apart differential clutch because I'm not ready to spend that kind of money. I'm willing to try another brand of oil or whatever to get a lasting result. I would like to here what others have done that brings results. Thanks for your comments, Jim
Last edited by bikemiser; Apr 24, 2021 at 02:00 PM.
Drifting
Joined: Sep 2014
Posts: 1,924
Likes: 392
From: Atlanta - - - - - Save the manuals
If not then buy the correct ACDelco oil (check here on the forum for part number) drain out the old oil and add ACDelco. If you are not going to do it yourself then watch and make sure they use ACDelco you purchased. Then again start again with the slow speed figure 8's
(Why do I say this .... been there done that. )
Last edited by Dutch08; Apr 24, 2021 at 07:16 PM.
Race Director
Joined: Mar 2010
Posts: 16,882
Likes: 5,341
From: T-Town WA
2016 C6 of Year Finalist
ok guys I'm done going to GM dealer to change diff oil to make it quiet around corners. Two diff oil changes as per TSB that fixes for a while then scrape/grind comes back. Please don't tell me to take apart differential clutch because I'm not ready to spend that kind of money. I'm willing to try another brand of oil or whatever to get a lasting result. I would like to here what others have done that brings results. Thanks for your comments, Jim
Retired & lovin' it!
Joined: Mar 2005
Posts: 4,475
Likes: 549
From: Jackson NJ
This is the correct gear oil, which incorporates the proper friction additive, but no disrespect, your comment is not correct. If the old gear oil is fully drained (i.e. let it sit & drain for a couple of hours) the old oil will drain out of the clutch packs as well as the housing. When refilled, the figure 8 exercise is needed to drive the fresh oil back into the clutch packs.
