11-21-2022, 08:26 PM | #1 |
Drives: 2018 ZL1 Join Date: Nov 2022
Location: USA
Posts: 7
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WHAT IS THIS?
*** Updated Video: ticking from interior...is this normal?
https://youtu.be/WM7ZgkIjwbc Video of cold start (Noise stops at 34 second mark) https://youtu.be/ne_TpzLLTWo I've searched every possible combination of keywords with no luck on finding a resolution. 2018 ZL1 with a metallic/rattle noise while under load/light acceleration (around 2.5k RPM). The noise is easily heard within the cabin and is not constant - increases with RPM. My local dealership just replaced cam and lifters because of this rattle - vehicle returned and the noise still exists. Noise also occurs during cold start. No rattle or abnormal noise while in neutral. Another Update: I've had the vehicle for 1 week post cam/lifter replacement. Vehicle had to be towed back to dealership today. Transmission fluid leaking/spraying everywhere, right behind front passenger wheel. Fun times. Last edited by 18_ZL1; 11-26-2022 at 03:29 PM. Reason: updated video link |
11-21-2022, 08:53 PM | #2 |
PKG4U
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You can’t really tell much from that video imo
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2020 Camaro LT1. Bought 10/2020 | GM PERF. CAI | GM Muffler Delete (Performance Exhaust 4” tips). | SOLD 1/2022|
2018 ZL1 Summit White | Bought 1/2022 | PDR, Recaros, Carbon Dash, WeaponX Hx System, Apex SM-10 in ZLE fitment w/PS4S Mods after Warranty “Imma keep it stock” |
11-21-2022, 09:47 PM | #3 |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,625
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I can't hear anything untoward in the video either
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11-21-2022, 11:18 PM | #4 |
Drives: 2017 1SS 6spd Join Date: Jan 2011
Location: Utah
Posts: 2,869
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I think I can hear it- kind've of a tick-a-tick-a-tick-a that seems to diminish in loudness as she warms up? Seems to stop by the end of the video.
I think traditionally its assumed to be a lifter, but I dunno what else it could be. Good luck. |
11-22-2022, 06:27 AM | #5 |
Drives: 2018 ZL1 Join Date: Nov 2022
Location: USA
Posts: 7
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Correct - tick/noise diminishes and no longer heard right around 33-34 second mark
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11-22-2022, 06:30 AM | #6 |
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,813
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My 2017 ZL1 has the same sound as yours when warming up from a cold start. Don’t think we have an issue here but could be wrong.
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11-22-2022, 06:38 AM | #7 |
Drives: 2019 2SS Convertible Camaro Join Date: Mar 2012
Location: Savannah, GA
Posts: 670
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Not sure I can hear the sound your describing but I recall a post about an elusive engine noise ending up being the idler pulley. Try doing some research on that, there are some videos out there to see if it sounds similar.
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11-26-2022, 03:14 PM | #8 |
Drives: 2018 ZL1 Join Date: Nov 2022
Location: USA
Posts: 7
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Thank you for the responses everyone - new video link of noise from the interior. Hoping you can hear the noise/ticking more clearly now
https://youtu.be/WM7ZgkIjwbc normal? |
11-26-2022, 09:56 PM | #9 |
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,813
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I can’t hear any abnormal noise either. I say keep driving it and maybe the issue will show up eventually as it might be hard to diagnose now. Good luck.
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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11-26-2022, 10:40 PM | #10 |
PKG4U
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Lt4 hit the nail. Drive it until you can easily replicate an obvious sign of an issue to a dealer or shop is probably your best bet. Good luck and I hope it’s small potatoes!
__________________
2020 Camaro LT1. Bought 10/2020 | GM PERF. CAI | GM Muffler Delete (Performance Exhaust 4” tips). | SOLD 1/2022|
2018 ZL1 Summit White | Bought 1/2022 | PDR, Recaros, Carbon Dash, WeaponX Hx System, Apex SM-10 in ZLE fitment w/PS4S Mods after Warranty “Imma keep it stock” |
11-26-2022, 11:04 PM | #11 |
Account Suspended
Drives: 21 ZL1 Join Date: Feb 2022
Location: South East
Posts: 662
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At this point I would just take a bag of money and the car and drop it off at vengeance racing. You will get it back with lots more power and completely sorted out. Letting the dealer monkeys keep putting their ham fists on it is going to get you no where.
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