My 2013 automatic LS (40k miles) is making a weird grind/winding noise immediately after I start it. It doesn't happen every start. Usually only if it's been off for awhile.
I tried to record it. You might have to turn your volume up a bit:
If anyone's experienced this before or has an idea of what it might be I'd really appreciate your insight.
My 2014 equinox made the same type of noise when the dealer put in dino oil and my mom wanted to wait till the OCI dropped to 0%. I changed the oil and started putting in mobil 1 and it hasn't made the noise since. Not sure if it could be the same thing
It sounds like a sympathetic vibration to me. There was a known problem with lines attached to the firewall that would vibrate under certain circumstances. I'd like to hear what it sounds like in the engine compartment.