I have a cobalt LS 2006 model at about 100,600 miles. Around December of 2016 my cars engine start up sound became more raw. In response i had the oil and coolant changed out, but it did not revert back to its normal start up sound. So, i bough some belt dressing in the hopes that it was a 2 dollar fix. After using the dressing for a week and a half, i have deduced it is not the belt causing the noise. So, i have attached the sound file, what could this be?
Ill add a better sound sample if needed.