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Hope you find it. My 79, 96 and 03 (lesser extent) had squeaking noises. Not the C7 so far - good luck finding the cause.my 82 corvette as squeaking noise up front while driving but not on start up the noise starts around 15 km/h I have checked all belts

Lots of things it could be including alternator, AC pump, idler pulley, fan bearing if it has one, etc. First thing I would try is spraying a strong soapy water solution on the belts while running and then try it. Belts running surfaces will often glaze but still look fine. Drive by someone listening at your 15 kph speed and have them listen for possibly a wheel bearing squeak as well. Hope you find it. Let us know.my 82 corvette as squeaking noise up front while driving but not on start up the noise starts around 15 km/h I have checked all belts
I just took the 2013 C6 for a test drive yesterday at Don Wheaton Chev, checking it out for "ncnmra" who is still interested in buying it. It had a terrible squeal from the engine compartment immediately upon start-up and it remained for the entire test drive. They suggested it was an over-tightened belt and agreed it would have to be corrected. There weren't many others issues so it proved to be a good vehicle.
I also noticed "creaking" from the transparent roof panel when going over bumps or sometimes hard cornering. I've had a vehicle with removable t-tops before that would periodically do that but on this C6 it was often enough to be annoying. I took the roof off before the test drive and all the outer "rubber" was intact and in good shape. Will lubrication solve that noise or is this common for the transparent roofs?