Supercharger Idler Pulley Sounds

A scraping or moaning sound may be heard from the supercharger idler pulley on some 2017 CTS-V, Corvette; and 2017-2018 Camaro models equipped with the supercharged 6.2L V8 engine (RPO LT4). The sound will be most noticeable when the engine is idling.


This condition has the following VIN breakpoints:



If the pulley sound is found, replace the idler pulley assembly. (Fig. 12)

Fig. 12


– Thanks to Richard Renshaw


Updated June 1, 2017

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