Watch for Whiny Corvette

Owners of 2006-2014 Chevy Corvettes equipped with an automatic transmission may comment about a high-pitched whine or buzz noise heard from under the vehicle with the key on and the engine off, or for up to one minute after the vehicle has been shut off.

Information courtesy of Mitchell 1

Mike Mavrigian

June 2, 2021

The noise may be caused by the internal transmission solenoids being commanded to minimum line pressure by the TCM (transmission control module). The noise is a normal operating characteristic.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.