Re: high pitch whistling/rattling noise
Reply #8 –
License plate loose?
Swaybar link bushings shot and washers jingling?
Left your spare keys on top of the engine?
Get out there and start thumping things.
I once had a weird buzz/whistle on an 81 Monte Carlo, tried to find the noise for months. Finally went out on a nice straight, flat, deserted dead-end road out in farm country with no traffic noise, and no other cars to get in the way. Back and forth a few times, tracked it to the thin plastic filler strip between the windshield glass and chrome trim that was vibrating in the wind like a blade of grass between your thumbs.