Quote:
Originally Posted by Vicster
I have a new supercharger waiting for my ZL1 at the dealer, mine had the marble rattle sound. I already bought a LPE coupler as I was going to replace it myself to protect the engine. But with the metal migration into the bearings I requested that they replace the superchager just to be safe. 
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Smart move. Replacing the isolator yourself may void the warranty, but if GM changes the SC, you'll retain the warranty which would now be for 10 years or 120,000 miles.