Good Evening,

Yesterday after my truck sat for about 10 hours I went to start it. I heard this sound, hadn't heard it before. I had no warning lights or indicators, stereo system was turned off, and it stopped after about 10-15 seconds. This was the first time I heard it so this morning I had my phone ready just in case it happened again. Well this morning I heard it again and had my phone ready, I was able to capture it on my phone. If anybody knows what it is please let me know.

Thank you,
Jef

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I think I heard an airplane in the background...

 

It is the chirping sound, can't tell what it is.