March 29, 2017
GM TechLink
A scraping or moaning sound may be heard from the supercharger idler pulley on some 2017 Cadillac 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
Article ID: 29
Created: May 10, 2020
Last Updated: May 10, 2020
Online URL: https://www.cadillacvnet.com/knowledge-base/article/2017-cadillac-cts-v-gm-techlink-supercharger-idler-pulley-sounds-29.html