04-22-2021, 04:51 PM | #15 |
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,809
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Noise is not normal at least compared to my 2017. Hope it’s not a lifter going bad. Hopefully it’s the fuel line check valve or something else. 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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04-23-2021, 11:45 AM | #16 |
Drives: ‘18 ZL1 / ‘22 ZLE Join Date: Oct 2013
Location: PA
Posts: 584
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I’m going to pick up a stethoscope for sure. I think a bad lifter would produce a consistent knocking, right? It might be a lifter but who knows
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05-10-2021, 10:40 AM | #17 |
Drives: Chevrolet Camaro Join Date: May 2021
Location: Wi
Posts: 5
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Sounds like my going in Wednesday. I when and got a stethoscope and it’s the fuel line on the left like The service bulletin said.
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05-11-2021, 10:42 AM | #18 |
Drives: ‘18 ZL1 / ‘22 ZLE Join Date: Oct 2013
Location: PA
Posts: 584
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I picked up a stethoscope and tested everything. It does sound like it’s coming from the fuel line. I messaged a another ZL1 owner with the same issue and he said his dealer replaced the fuel line. The car was good for a bit but then the noise returned. My guess is the new fuel line was defective or the issue is somewhere else. My dealer is going to check it out next week.
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05-11-2021, 11:41 AM | #19 |
Drives: 1of 66 Orange Crush 2020 ZL1’s Join Date: Dec 2016
Location: YYC
Posts: 108
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Are you sure it isn't coming from the clutch?
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Dreaming of a 2020 A10Crush ZL1 *TPW Sept 30* Built November 14, 2019, shipped Nov 15, 2019. Arrived at the dealer January 29, 2020.
2013 CTSV coupe 6MT SOLD |
05-11-2021, 03:57 PM | #20 |
Drives: ‘18 ZL1 / ‘22 ZLE Join Date: Oct 2013
Location: PA
Posts: 584
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05-12-2021, 08:06 AM | #21 |
Drives: Chevrolet Camaro Join Date: May 2021
Location: Wi
Posts: 5
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No clutch for me my is a 10-speed. If you do have a clutch you could probably step on it and the noise should go away. Is there a check valve on the fuel pump also or is it just on the line on the back of the motor? Dealer just order a new line. See how it goes the tech said the noise might even come back. Then they will look into more.
Last edited by Speedylt4; 05-12-2021 at 08:59 AM. |
05-12-2021, 09:30 AM | #22 | |
Drives: ‘18 ZL1 / ‘22 ZLE Join Date: Oct 2013
Location: PA
Posts: 584
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Quote:
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05-12-2021, 11:20 AM | #23 |
Drives: Chevrolet Camaro Join Date: May 2021
Location: Wi
Posts: 5
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No the service writer didn’t. I ask her if they were also a valve by the fuel pump and she didn’t know. I will ask to talk with the tech nexts time.
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05-12-2021, 05:44 PM | #24 |
Drives: 1of 66 Orange Crush 2020 ZL1’s Join Date: Dec 2016
Location: YYC
Posts: 108
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I would highly doubt that sound is coming from the fuel line... Sometimes it can be hard to pinpoint a high pitch squeak like you have... Have you tried engaging the clutch to see if the sound changes or goes away? Does the sound very with engine speed? I am surprised they didn't remove the belts and run it before replacing the SC... Would have known if it was accessory / SC related right away.
I have heard LS engines with bad lifters that sound like this...
__________________
Dreaming of a 2020 A10Crush ZL1 *TPW Sept 30* Built November 14, 2019, shipped Nov 15, 2019. Arrived at the dealer January 29, 2020.
2013 CTSV coupe 6MT SOLD |
05-12-2021, 09:47 PM | #25 | |
Drives: ‘18 ZL1 / ‘22 ZLE Join Date: Oct 2013
Location: PA
Posts: 584
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Quote:
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05-13-2021, 11:45 AM | #26 |
Drives: Chevrolet Camaro Join Date: May 2021
Location: Wi
Posts: 5
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Just got a call the parts are in. Getting it done on the Monday the 24.
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05-25-2021, 08:49 AM | #27 |
Drives: Chevrolet Camaro Join Date: May 2021
Location: Wi
Posts: 5
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They replaced the line yesterday and no rattling/marble sound today. Hope it doesn’t come back. The noise is back lol My buddy has 4 Zl1 on his lot and they all sounds like my, so I guess it normal.
Last edited by Speedylt4; 06-02-2021 at 10:01 AM. |
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