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Old 12-08-2018, 08:31 AM   #34
Agent K
 
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Drives: 2017 ZL1 6MT
Join Date: Feb 2018
Location: Memphis, TN
Posts: 191
Quote:
Originally Posted by hawk02 View Post
My engine started to make a whining noise around 7000 miles. It sounded like it was coming from the supercharger pulley. Turns out the idler pulley directly below it had a bad bearing.

Diagnosed it by careful putting one end of a long wooden dowel on the pulley bolt and the other end up to my ear. You could hear and feel the bearing buzzing through the dowel. A long screwdriver will also work. Best diagnostic tool is an engine stethoscope, if you've got access to one.
Thanks, hawk02. This is very helpful info.
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2017 ZL1 Arctic Blue Metallic / 6MT / sunroof / NAV / PDR / RotoFab CAI + dry filter / Tony Mamo TB V1 / Skip Shift Eliminator / Hurst Short Throw Shifter / ZL1 floor mats / Dead Pedal cover (to match other pedals) / ARH Catless 1-7/8" headers + ARH X-pipe + AWE Touring Axle-Back / Diode Dynamic smoked side markers / American Authority tow hook
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