Diff Whine ... Common?
Le Mans Master
Joined: Aug 2015
Posts: 8,243
Likes: 4,617
From: Southwest Florida
My new 2024 Z51 has noticeable gear whine. I had a ~400 mile drive home from the dealer and I started really noticing it toward the end of the trip, which was all back roads with varying speed and zero cruise control. My race mechanic friend who owns a 2023 and has worked on and tracked multiple C8s just rode in mine today and said it's not normal and this is the first C8 he's seen with this noise. He said it's loud enough for him to consider unacceptable in a new $80k car.
I'm going to just deal with it until the car hits 1500 miles. I assume if I took it in right now they'd just tell me it's normal to have noises during break in, which might end up being true.
I'm going to just deal with it until the car hits 1500 miles. I assume if I took it in right now they'd just tell me it's normal to have noises during break in, which might end up being true.
3rd Gear
Joined: Aug 2016
Posts: 3
Likes: 0
Gear wine from day one. Now has 700 miles. Dealer mechanic says it shouldn’t. Send recordings to GM waiting for reply.
also has slight thump when shifting manually 1st to 2nd and 2nd to third. Smooth after that. And no sounds in full automatic.
hate the wine, can’t stop hearing it. Too expensive to have to “live with it”. Fantastic care otherwise.
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
I have a 24 C8. 3LT.
Gear wine from day one. Now has 700 miles. Dealer mechanic says it shouldn’t. Send recordings to GM waiting for reply.
also has slight thump when shifting manually 1st to 2nd and 2nd to third. Smooth after that. And no sounds in full automatic.
hate the wine, can’t stop hearing it. Too expensive to have to “live with it”. Fantastic care otherwise.
Gear wine from day one. Now has 700 miles. Dealer mechanic says it shouldn’t. Send recordings to GM waiting for reply.
also has slight thump when shifting manually 1st to 2nd and 2nd to third. Smooth after that. And no sounds in full automatic.
hate the wine, can’t stop hearing it. Too expensive to have to “live with it”. Fantastic care otherwise.
Not worth a DCT removal and other possible associated issues that may arise after the major operation and reinstall.
Le Mans Master
Joined: Aug 2015
Posts: 8,243
Likes: 4,617
From: Southwest Florida
I don’t know what’s worse my diff whine or the extreme road noise! A forum member did a thread on noise coming in because of the door gaskets. I did the “paper test” and my gasket are sealing the door.
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
I don’t know what’s worse my diff whine or the extreme road noise! A forum member did a thread on noise coming in because of the door gaskets. I did the “paper test” and my gasket are sealing the door.
https://youtube.com/shorts/EpOnLe2mfls?feature=shared
https://youtube.com/shorts/EpOnLe2mfls?feature=shared
Drifting
Joined: Aug 2022
Posts: 1,897
Likes: 789
From: Stamford, CT
I replied to your other thread
I don’t know what’s worse my diff whine or the extreme road noise! A forum member did a thread on noise coming in because of the door gaskets. I did the “paper test” and my gasket are sealing the door.
https://youtube.com/shorts/EpOnLe2mfls?feature=shared
https://youtube.com/shorts/EpOnLe2mfls?feature=shared
Pro
Joined: Apr 2019
Posts: 699
Likes: 421
From: Armonk, NY
Advanced
Joined: Jun 2024
Posts: 54
Likes: 12
From: Kentucky
I mostly just wanted it documented before I start tracking the car. It's annoying me on the street and I definitely want it fixed but I'm hoping they'll agree to wait until winter to do the swap.
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3rd Gear
Joined: Aug 2016
Posts: 3
Likes: 0
hi -I was at a corvette meet yesterday and asked C8 owners whether they heard a whine - two said no and two said yes but it was faint. I'm taking it in to the dealer and will ask him about it - looking at all the threads I'd draw this conclusion:
1. given that this forum has thousands of viewers and only those with a noise problem respond - I'd guess the majority have quiet rear ends.
2. given that some are quick to live with it and some aren't (I don't want to live with it and don't see why I should), it suggests that there is a continuum of gear noise from loud to barely noticeable - so it isn't a yes/no question, it is a "how much" question
I'll let you know what the dealer says.
1. given that this forum has thousands of viewers and only those with a noise problem respond - I'd guess the majority have quiet rear ends.
2. given that some are quick to live with it and some aren't (I don't want to live with it and don't see why I should), it suggests that there is a continuum of gear noise from loud to barely noticeable - so it isn't a yes/no question, it is a "how much" question
I'll let you know what the dealer says.
anyone know how to elevate this to someone with authority.
(by the way, I Han the dealer tech ride with me before I left it at the dealership. He agreed that it was way too loud).