06-26-2009, 10:52 AM | #1 |
Drives: 2010 Silver Ice 2LT RS V6 Join Date: Jun 2009
Location: Echo, Louisiana
Posts: 12
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Clacking sound on cold cranks! HELP PLEASE!
When I first crank, I have a sporatic clacking noise that will continue until the car idles down. This takes a few seconds only. It only happens on cold cranks. After the first crank of the day...it doesn't do it again. Also..you can har some belt nosie non stop from the time of crank and even after it idles down. Any thoughts??
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06-26-2009, 01:35 PM | #2 | |
Drives: X-15 Velocipede Join Date: Mar 2008
Location: SW Florida
Posts: 4,637
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It's called piston slap.
Common in many GM engines. Quote:
.
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06-26-2009, 02:19 PM | #3 |
Drives: 2010 Silver Ice 2LT RS V6 Join Date: Jun 2009
Location: Echo, Louisiana
Posts: 12
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So what do you do?? It sounds horrible. Is it something that the dealer needs to go in and fix or do you just deal?? It didn't do it for about the first few hundred miles.
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06-26-2009, 06:20 PM | #4 | |
Drives: X-15 Velocipede Join Date: Mar 2008
Location: SW Florida
Posts: 4,637
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Quote:
I would just deal with it. I bought a new Corvette knowing all about it. I don't like it though... The link I posted has all the info, as they are dedicated anti piston-slappers. -
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General Motors ASEP, A.S. Automotive Technology, Telecommunications Specialist, CISCO Network Engineer STANDARD DISCLAIMER camaro5 is furnishing this information "as is". camaro5 does not provide any warranty of the information whatsoever, whether express, implied, or statutory, including, but not limited to, any warranty of merchantability or fitness for a particular purpose or any warranty that the contents of the information will be error-free. |
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07-02-2009, 06:03 PM | #5 |
Drives: 69,82,84 & 10 camaros,87 GMC,07z06 Join Date: Nov 2007
Location: arkansas
Posts: 328
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yeah it's a ls motor thing.it has been known to do it with other gm motors.no worries
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07-02-2009, 06:08 PM | #6 |
aka Patrick
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I have the same thing on my 2004 Silverado, nice little knocking sound but it is consistently there.. Faint.. but there all the time.
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07-02-2009, 06:11 PM | #7 |
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Drives: 02 Silverado, 09 Vue, 10 1SS Join Date: Aug 2008
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I doubt that "piston slap" is the issue. More likely noisy lifters until the oil pumps up top. No big deal. Still, it doesn't hurt to get the dealer to have a look.
The site listed is there to MAKE MONEY. Lawyers run it to advertise LAWSUITS so THEY can get paid.. |
07-02-2009, 06:22 PM | #8 |
Iatefiberglassinsulation
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Yeah those sites go nuts over the piston slap issue and say it destroys the engine... Ive had 2 LS motors with 100k on them and both pistion slapped while idling cold, neither one used a drop of oil, and both ran mint otherwise...
Like he said lawyers trying to make money...
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07-02-2009, 06:23 PM | #9 |
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