Vibration between 40-60mph, assume driveline

keep_hope_alive · 06-10-2025, 11:52 AM

I've developed a vibration between 40-60mph that worsens under load on my 2023 SS with the A10. At 50k mi now, and I've had trans fluid and diff fluid replaced. Vibration goes away when shifting to neutral and is present regardless of what gear i'm in (experimented with manual mode for a while). Also had the tires re-balanced as well as swapped to winter wheel/tires for a quick test to rule out tires as the source. Fuel econ has remained the same (averaging 24-25 mph with an average speed in the 40's), so I'm not seeing added rolling resistance.

My next suspect is the driveshaft, either bearings or u-joints. Rear diff is also a possibility. Since drivetrain is still under warranty, it's going to the dealer tomorrow.

I'll report back with the resolution. Figured I'd share for anyone else that experiences the issue.

DamonZ28 · 06-10-2025, 12:35 PM

Well, if it was a 4th gen, it would be an easy diagnosis - replace the driveshaft with aluminum. Not so easy on the 6th.

keep_hope_alive · 06-12-2025, 09:08 AM

Update #1: Dealer found that there was a bolt missing on the driveshaft assembly. They ordered the bolt and expect it today. Will hear more once they add it and test. Obviously, that would cause a vibration like i've experienced and it's also concerning.

Recall that the dealer likely removed and replaced driveline bolts when swapping engines.

Bumbleboy92 · 06-12-2025, 01:09 PM

Quote:

Originally Posted by keep_hope_alive

Update #1: Dealer found that there was a bolt missing on the driveshaft assembly. They ordered the bolt and expect it today. Will hear more once they add it and test. Obviously, that would cause a vibration like i've experienced and it's also concerning.

Recall that the dealer likely removed and replaced driveline bolts when swapping engines.

Keep documentation, who knows what else may be missing if they forgot a driveshaft bolt…

keep_hope_alive · 06-12-2025, 03:17 PM

Dealer replaced all 3 bolts (1 of 3 was missing), checked all others, no charge. Vibration issue solved.

keep_hope_alive · 06-12-2025, 05:00 PM

Quote:

Originally Posted by Bumbleboy92

Keep documentation, who knows what else may be missing if they forgot a driveshaft bolt…

It worked its way out... which is more concerning. It's been 30k mi. since the engine replacement. Vibration started a few weeks ago.

texSSin · 06-12-2025, 08:27 PM

Thanks for the update.

06-10-2025, 12:35 PM	#2
DamonZ28 Drives: 2020 Camaro 2SS Join Date: Nov 2022 Location: Janesville, WI Posts: 806 View My Garage	Well, if it was a 4th gen, it would be an easy diagnosis - replace the driveshaft with aluminum. Not so easy on the 6th. __________________ 2020 Camaro 2SS - Riverside Blue, NPP, Magnetic Ride, Sunroof Soler DLX Bluetooth Throttle Controller / OFFKAT Smoked LED Side Marker Lights / Blue SS emblems on front & rear / Wildhammer Rear Dark Reflectors / Trim Illusion Gloss Black Door Handle Covers / eBay Black Fuel Door / Screaming Chicken Fender Hash Marks / Color-Matched G2 Caliper Paint CT Sounds Tropo 10" Sub / Down4Sound MM1000 Mini Maxx amp / JL Audio LoC-22 line output converter / Sub Thump Plug N Play T-Harness With ANC Defeat Harness Kit My Camaro Journal

06-12-2025, 09:08 AM	#3
keep_hope_alive Electrical Engineer Drives: 2023 1SS A10 Black Join Date: Apr 2022 Location: Illinois Posts: 910	Update #1: Dealer found that there was a bolt missing on the driveshaft assembly. They ordered the bolt and expect it today. Will hear more once they add it and test. Obviously, that would cause a vibration like i've experienced and it's also concerning. Recall that the dealer likely removed and replaced driveline bolts when swapping engines. __________________ 2023 1SS A10 Black H72/C2U/56W/NPP - Daily Driver 1100: 5/3/22 . . . . . . . 2000: 6/25/22 . . . . . .4000: 8/17/22 . . . . . . . 6000: 9/10/22 Daily Driver mileage update: 45k mi. @ Mar 2025 New Engine @ 22,600 mi. due to dealer confusing bad gas with a bad engine. Build Log: https://www.camaro6.com/forums/showt...6#post11353116

06-12-2025, 03:17 PM	#5
keep_hope_alive Electrical Engineer Drives: 2023 1SS A10 Black Join Date: Apr 2022 Location: Illinois Posts: 910	Dealer replaced all 3 bolts (1 of 3 was missing), checked all others, no charge. Vibration issue solved. __________________ 2023 1SS A10 Black H72/C2U/56W/NPP - Daily Driver 1100: 5/3/22 . . . . . . . 2000: 6/25/22 . . . . . .4000: 8/17/22 . . . . . . . 6000: 9/10/22 Daily Driver mileage update: 45k mi. @ Mar 2025 New Engine @ 22,600 mi. due to dealer confusing bad gas with a bad engine. Build Log: https://www.camaro6.com/forums/showt...6#post11353116

06-10-2025, 11:52 AM	#1
keep_hope_alive Electrical Engineer Drives: 2023 1SS A10 Black Join Date: Apr 2022 Location: Illinois Posts: 910	Vibration between 40-60mph, assume driveline I've developed a vibration between 40-60mph that worsens under load on my 2023 SS with the A10. At 50k mi now, and I've had trans fluid and diff fluid replaced. Vibration goes away when shifting to neutral and is present regardless of what gear i'm in (experimented with manual mode for a while). Also had the tires re-balanced as well as swapped to winter wheel/tires for a quick test to rule out tires as the source. Fuel econ has remained the same (averaging 24-25 mph with an average speed in the 40's), so I'm not seeing added rolling resistance. My next suspect is the driveshaft, either bearings or u-joints. Rear diff is also a possibility. Since drivetrain is still under warranty, it's going to the dealer tomorrow. I'll report back with the resolution. Figured I'd share for anyone else that experiences the issue. __________________ 2023 1SS A10 Black H72/C2U/56W/NPP - Daily Driver 1100: 5/3/22 . . . . . . . 2000: 6/25/22 . . . . . .4000: 8/17/22 . . . . . . . 6000: 9/10/22 Daily Driver mileage update: 45k mi. @ Mar 2025 New Engine @ 22,600 mi. due to dealer confusing bad gas with a bad engine. Build Log: https://www.camaro6.com/forums/showt...6#post11353116

06-12-2025, 08:27 PM	#7
texSSin Drives: 2018 SS 2 Join Date: May 2025 Location: Cen. Tex. Posts: 62	Thanks for the update.

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