moayyed

Hii,
anyone can help i have a rattle sound in my 2010 ls9 appreciate if you can share and advice.
car is bone stock with 14,000 miles only.

basically i have a rattle or noise at idle... it seems the sound coming from the supercharger cover.

regards,
mohd

leadfart

You need to replace your stock coupler with a solid one, that is most likely your culprit.

don37

mine has been rattling for several years. No big deal

SweetZO6

Loosen the SC belt tensioner and check the play between the pulley and shaft. If there is any, it is the SC isolator coupler and not the LS9. Mine had a 1/2” of play. My SC was replaced under warranty at 51K miles but the rattle was there long before it was replaced.

Ed

drewz06

I got em on my 2010...

gonna do lpe snout, will let you know if solid coupler makes a difference...

captain vette

Not fixing it can lead to SC rotors bearing issue meaning complete SC rebuild by Eaton

chassed

Cheap fix friend

https://www.lingenfelter.com/product...hoC314QAvD_BwE

don37

thanks!!!!!!

captain vette

the part is cheap but it’s a multiples hours pita job

chubbs6350

Yup and if you're already doing all that work then you might as well put on a pulley, change or reinforce the bricks, and then of course get the car tuned.
That was my approach anyways 😂.

drewz06

yep that's why I just picked up the lpe 710 kit

it all started with the isolator....

corvettejoe09

Since it was replaced under warranty, I believe you will have the same problem again because of the defective design of the isolator coupler.
At 18k on the clock, I replaced my coupler with a ZZP coupler. It's very well made. The OEM coupler starter to wear a groove on the shaft!

Joey D

What did those changes net you in RWHP gains? I did the bricks and the coupler, but stayed away from even a small pully change as I didnt want to address cooling due to the smaller pully.

chassed

I did this job by my self. Being meticulous means it’ll be time consuming. Dont let negative Nancy’s steer you away from doing work to your own car.