lifters ratteling !
 

not every day but in morning upon start up and when i leave work in the evening car only has 6,800 miles on it called service dept. and they said they will need to keep overnight so they can hear is this a problem that has been talked about on here before its a ls99 . just ticks for a few minutes then no more is it gonna be safe to drive for a few more days its my daily driver car ?

There is a TSB out for your issue. I had my lifters replaced a month agao for the same problem. GM has new designed lifters to fix the problem. My car only had 3,000 mile before it started ticking during cold starts. It sux but there going to have to open your enigne to replace them. Your going to be without your car for a couple of days. It will be safe to drive just get it done ASAP.

Heres a link to the TSB http://www.ls1tech.com/forums/genera...m-engines.html

Mine does it too, but its been so hot here that it hasn't been doing it lately. I took mine to the dealership and they kept it overnight, didn't tick for them when they kept it so they're not going to replace them unless they tick. I was told I might have to wait for cooler weather. I'm shocked that they would even consider replacing them since I am supercharged.

If you have aftermarket headers with cheap gaskets, a gasket leak sounds very similar. PQ posted a video with his ticking, he thought it was lifters and ended up being a header gasket.
Probably not likely if you have stock manifolds.

....I'm probably just going to have ATLPF do a LS3 conversion and forget about the dealer.

thanks everyone for the info my car is bone stock except for the axle back exhaust !

pwrmanpaul66, keep us up on what the dealer does to fix your vehicle while it's there. Thank you for your time!

Jeff Morris, Chevrolet Customer Service

I have the same very noticeable issue however they "couldn't" get it to replicate the noise.

its at dealer now getting lifters replaced no hassels at all called last tues talked to service rep and he said he would check on the tsb and order parts i dropped it off last night and called this morning and they told me should be done this afternoon !

ill keep you informed as the day goes on im hoping they do a good job and not just rush it out the door just for me to have problems down the road ! but they have been good to me over the years !

Thats good to hear Pwrman. I hope everything is as it should be and you can enjoy your vehicle again. Mustang Killa, have you had your vehicle checked over by another dealer to see if they can hear what you are hearing? Sometimes getting a second opinion can mean the difference between getting an issue repaired and letting it sit. Could you keep us updated as well on how your issue progresses? Thank you.

Jeff Morris, Chevrolet Customer Service

Rattling under the hood
 

I looked at that link from Camaro84 for the TSB, but I only saw the 2010 Camaro SS on there. Are the 2011's not supposed to have this problem? Mine has since I got it, and I've taken it to 2 different dealerships, and they both couldn't replicate the noise. After I saw this forum, I called another dealership with y'alls information y'all posted and they're gonna look up the TSB and see if it might relate to my car's problem

nope 2011 must be coverd under that one too mine is done all taken care of and running beautiful again love this car !!!!! and i really like the service i got from karls chevrolet ! the service tech was great person to work with too ! bulliten doc#2578335 that is on my invoice sheet ! amazing how they could pull heads and everything else and get it all put back together in less than 6 or 7 hrs. with no issues !

Ok good, there's only one Chevy dealership here in Waco (just moved for Baylor) that I know of, Samuel Adams Chevrolet, and hopefully they'll be able to fix this problem for me too. Thanks a lot, this was really helpful

and make sure that if they do end up getting your cars fixed verify that they replace all head bolts too should be 30 alltogether !