I hear a noise- what I can best describe as a metallic plucking sound - like a low metallic chord being plucked- when my automatic transmission 2008 Mazda3 shifts from first to second gear. It only happens the first time. I don’t hear it after the car ihas been driving and is warmed up. Any thoughts on what could be happening? Thank you, in advance, for any advice!
Ask your shop to check the automatic transmission fluid level.
Has the fluid and filter ever been changed? I would start there.