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c5 random rattle at idle

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Old Apr 23, 2021 | 12:44 PM
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Default c5 random rattle at idle

Hello everybody, I have a 99 c5 vert and sometimes it will rattle at idle and lower speed driving. it sounds like something is tapping around down there. I recently installed a hyper flash relay and notice some broken clips but i glued everything back and reinstalled it with no problems, about a week later i started noticing a rapid tick under the dashboard. almost like a really loud relay ticking very very fast at a random rate. Im good with mechanical work but anything electrical i have no idea.
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Old Apr 23, 2021 | 01:41 PM
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Well...at least it's not coming from under the hood.
The dash isn't hard to pull off, and if you remove the dash to find out, you could upgrade your dash lights and add gauge rings at the same time.
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Old Apr 23, 2021 | 06:32 PM
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Moved to C5 Tech.
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Old Apr 26, 2021 | 01:07 PM
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Originally Posted by Talbot Trammell
Hello everybody, I have a 99 c5 vert and sometimes it will rattle at idle and lower speed driving. it sounds like something is tapping around down there. I recently installed a hyper flash relay and notice some broken clips but i glued everything back and reinstalled it with no problems, about a week later i started noticing a rapid tick under the dashboard. almost like a really loud relay ticking very very fast at a random rate. Im good with mechanical work but anything electrical i have no idea.
i took a video of it but i have no idea if its going to send thru here but it sounds like a ticking and i found out it happens even when the engine isnt running if the key is in the run position
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