Rear End whirring on decel... - Page 2

Kamero6 · 08-13-2023, 12:51 PM

If you catch it early on, adjusting the pinion and ring (nobody does this anyomore btw), and new oil might keep it alive.
Once teeth are worn out or worked out of alignments it's gone.

You can get a used or new diff on ebay oif you're out of warranty/denied. It isn't that expensive and any shop can do the work.

CalgaryZL1 · 08-13-2023, 12:52 PM

Annual fluid change is the cheapest easiest thing you can do for something that deals with the horsepower that it does

tomster · 08-18-2023, 06:47 AM

Mine has been whining since after the first track day. Fluid was changed, The car now has 4,000 mi on it and it's continuing to whine. I'll be taking it to the dealership once the summer season is done

tomster · 08-23-2023, 12:55 AM

Pinion nut worked it's way loose... In it's way to the dealer for a rear diff rebuild

Revalot · 08-23-2023, 06:11 PM

What brand of fluid/brand did you put in the rear end? Thanks

tomster · 09-01-2023, 01:24 PM

Quote:

Originally Posted by Revalot

What brand of fluid/brand did you put in the rear end? Thanks

OEM acdelco fluid.

The dealer is putting a new diff in it next week...

08-18-2023, 06:47 AM	#17
tomster RedLine Drives: 2022 ZL1 1LE Join Date: Dec 2012 Location: Chicago area Posts: 792 View My Garage	Mine has been whining since after the first track day. Fluid was changed, The car now has 4,000 mi on it and it's continuing to whine. I'll be taking it to the dealership once the summer season is done __________________ 2018 GMC 2500 "Blue" (Sold) 2018 ZL1 1LE Hyper Blue" (Sold) 2018 CTS-V "Black" (Sold) 2022 GMC 2500 "Blue" 2022 ZL1 1LE 6spd "Rapid Blue" 2023 ZL1 1LE Auto Rapid Blue (ordered)

08-23-2023, 12:55 AM	#18
tomster RedLine Drives: 2022 ZL1 1LE Join Date: Dec 2012 Location: Chicago area Posts: 792 View My Garage	Pinion nut worked it's way loose... In it's way to the dealer for a rear diff rebuild __________________ 2018 GMC 2500 "Blue" (Sold) 2018 ZL1 1LE Hyper Blue" (Sold) 2018 CTS-V "Black" (Sold) 2022 GMC 2500 "Blue" 2022 ZL1 1LE 6spd "Rapid Blue" 2023 ZL1 1LE Auto Rapid Blue (ordered)

08-13-2023, 12:51 PM	#15
Kamero6 Drives: 6th Gen LT1 Join Date: Jun 2023 Location: Southeast Posts: 244	If you catch it early on, adjusting the pinion and ring (nobody does this anyomore btw), and new oil might keep it alive. Once teeth are worn out or worked out of alignments it's gone. You can get a used or new diff on ebay oif you're out of warranty/denied. It isn't that expensive and any shop can do the work.

08-13-2023, 12:52 PM	#16
CalgaryZL1 Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023 Location: Calgary Canada Posts: 1,483	Annual fluid change is the cheapest easiest thing you can do for something that deals with the horsepower that it does

08-23-2023, 06:11 PM	#19
Revalot Drives: ZL1/1LE parts added Join Date: May 2018 Location: Somewhere around Texas pines tress and smooth asphalt Posts: 609	What brand of fluid/brand did you put in the rear end? Thanks

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