Rear diff issues.. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

zbaby71 · 06-23-2025, 05:18 PM

Hey...I have a 2010 2SS 6.2 ls3 6spd manual...My rear end is making a whirling sound when accelerating. I had my diff fluid changed and I think it made it worse. What all components will I need to replace? It's like $2k for new...would it be ignorant to look at used? I just dont have the money to throw all new on it. This is my baby..my daily driver..
Any suggestions or advice would be greatly appreciated.

gtstorey · 06-23-2025, 05:38 PM

Could be diff, or wheel bearings or even tires. Not much chance that changing the fluid made it worse unless they used the wrong fluid.

malibupaul · 09-08-2025, 10:45 AM

Wrong diff fluid? Are you meaning wrong would be anything but GL5 or anything other than the correct AC Delco fluid? I’m going to change mine in my 2013 LS and was going to try something other than AC Delco as long as it is GL5 like Royal Purple or Mobile 1.

2ssMike · 11-28-2025, 01:52 AM

Hopefully you got this fixed by now. I just had to have my diff rebuilt because it had leaked almost all of the fluid out and was running dry. There is a TSB about the fluid they used originally destroying the seals, which I think could have happened with mine.

el ess A · 11-28-2025, 07:59 AM

I changed our Camaro rear gear oils out soon after I got both of them home, along with the M6 lube on the ZL1. Went with Mobil 1 front to back on the ZL1 and left the auto trans fluid alone in the SS, but I figured whatever wear-in stuff in the rear and M6 came out with the old fluid. I haven't noticed anything detrimental yet.

malibupaul · 11-28-2025, 08:53 AM

2SSMike, I changed the fluid. Used Valvoline 75W-90 Premium Full Synthetic Extended Protection. It didn’t quiet the noise. I do have the original tires - hope it’s just that.

Beauwulf · 11-30-2025, 09:22 PM

Original tires as in "to you" or OEM original? 12 YO tires is no bueno! If it does turn into a gearset, a ring and pinion set can be had from $237 up (plus bearing and fluid) and it's probably 3-400 for installation.

malibupaul · 12-01-2025, 10:19 AM

12 year old tires. Car is generally garage kept, with few miles put on the past years, so I see no cracking. The rear gears were replaced at about 30K miles. When that didn’t resolve the problem, the dealer replaced the housing believing it was warped, and the gears again. All were covered by warranty. Thanks for the info. Good to know.

06-23-2025, 05:18 PM	#1
zbaby71 Meg Drives: 2010 Chevrolet Camaro 2SS 6.2 LS3 Join Date: Jun 2023 Location: Springfield Illinois Posts: 2 View My Garage	Rear diff issues.. Hey...I have a 2010 2SS 6.2 ls3 6spd manual...My rear end is making a whirling sound when accelerating. I had my diff fluid changed and I think it made it worse. What all components will I need to replace? It's like $2k for new...would it be ignorant to look at used? I just dont have the money to throw all new on it. This is my baby..my daily driver.. Any suggestions or advice would be greatly appreciated. Attached Images

11-28-2025, 07:59 AM	#5
el ess A Older Than Dirt Drives: 2010 & 2013 Camaros Join Date: Apr 2010 Location: Aiken, SC Posts: 4,685	I changed our Camaro rear gear oils out soon after I got both of them home, along with the M6 lube on the ZL1. Went with Mobil 1 front to back on the ZL1 and left the auto trans fluid alone in the SS, but I figured whatever wear-in stuff in the rear and M6 came out with the old fluid. I haven't noticed anything detrimental yet. __________________ 2010 2SS TE, 1 of 822/2013 Camaro ZL1 vert, 1 of 54

11-28-2025, 08:53 AM	#6
malibupaul Drives: 2013 Camaro 2LS Join Date: Mar 2022 Location: Pennsylvania Posts: 64	2SSMike, I changed the fluid. Used Valvoline 75W-90 Premium Full Synthetic Extended Protection. It didn’t quiet the noise. I do have the original tires - hope it’s just that. __________________ 2013 2LS

11-30-2025, 09:22 PM	#7
Beauwulf Drives: '10 LT RS A6 & '04 Acura RSX Type S Join Date: Oct 2009 Location: Florida Posts: 1,549 View My Garage	Original tires as in "to you" or OEM original? 12 YO tires is no bueno! If it does turn into a gearset, a ring and pinion set can be had from $237 up (plus bearing and fluid) and it's probably 3-400 for installation. __________________

12-01-2025, 10:19 AM	#8
malibupaul Drives: 2013 Camaro 2LS Join Date: Mar 2022 Location: Pennsylvania Posts: 64	12 year old tires. Car is generally garage kept, with few miles put on the past years, so I see no cracking. The rear gears were replaced at about 30K miles. When that didn’t resolve the problem, the dealer replaced the housing believing it was warped, and the gears again. All were covered by warranty. Thanks for the info. Good to know. __________________ 2013 2LS

06-23-2025, 05:38 PM	#2
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,450	Could be diff, or wheel bearings or even tires. Not much chance that changing the fluid made it worse unless they used the wrong fluid.

09-08-2025, 10:45 AM	#3
malibupaul Drives: 2013 Camaro 2LS Join Date: Mar 2022 Location: Pennsylvania Posts: 64	Wrong diff fluid? Are you meaning wrong would be anything but GL5 or anything other than the correct AC Delco fluid? I’m going to change mine in my 2013 LS and was going to try something other than AC Delco as long as it is GL5 like Royal Purple or Mobile 1.

11-28-2025, 01:52 AM	#4
2ssMike Drives: Chevy Camaro 2SS Join Date: Aug 2022 Location: NC Posts: 2	Hopefully you got this fixed by now. I just had to have my diff rebuilt because it had leaked almost all of the fluid out and was running dry. There is a TSB about the fluid they used originally destroying the seals, which I think could have happened with mine.