Differential thump thump thump
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Joined: Feb 2023
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From: Plainfield, IL
Differential thump thump thump
18 months ago I changed the diff fluid. Now when I pull out of my driveway, everything is cold, I go straight for about 10 feet then turn as hard as you can to the left, ( 90 degrees ) I get a thumping noise from the rear until the car straightens out. There are about 3-4 thumps. I'm thinking it is the diff. Any other thoughts?
Last edited by chevyvette98!; Oct 21, 2024 at 02:29 PM.
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Melting Slicks
Joined: Dec 2004
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From: Sleepy Hollow- NJ
18 months ago I changed the diff fluid. Now when I pull out of my driveway, everything is cold, I go straight for about 10 feet then turn as hard as you can to the left, ( 90 degrees ) I get a thumping noise from the rear until the car straightens out. There are about 3-4 thumps. I'm thinking it is the diff. Any other thoughts?
https://www.corvetteforum.com/forums...-insanity.html
Last edited by Johnny Hardcore; Oct 27, 2024 at 03:38 PM.
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Joined: Feb 2023
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From: Plainfield, IL
Great question: When I purchased the car about 20 months ago, it had a Diff leak drivers side. Not at the seal itself but at the oring at the round cover that holds the seal held in by 6-7 bolts. I had to remove the left axle and some other stuff to replace the oring and do another type of sealant per the Technical Service Bulletin. I used the You Tube video from" Toys4Life" on how to do this which were great instructions, and yes, I did clean and lube the spline.
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From: Raleigh, NC
My car has done this as well. I used diff oil that said approved for PosiTraction. I change the oil again and added a bottle of the limited slip additive and the problem went away. Put the additive in first.
Burning Brakes
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Drain a little gear lube out/few ounces and add the GM additive. Top off with your flavor of appropriately rated gear lube. Or just change it out like Lucky said.
https://www.summitracing.com/parts/ado-10-4003
https://www.summitracing.com/parts/ado-10-4003
