Pre-Facelift ZR6 strange noise...

[VIPZR6]

Noticed the other day after I had parked my car in the garage that there was a strange noise coming from the back of it after it had been turned off. Last night, noticed it again and took a video (ableit there being no picture because it was dark, you can still hear the sound).

Its coming from the back of the car, underneath the boot. Seems to be louder on the passenger side.

It sounds almost like air escaping or somthing,. maybe from the fuel system? The only way i noticed it is because i happen to live in a quiet part of town

Does anyone elses car do this? Dont know if its anything to be alarmed about.

[Pah]

Cant say ive heard that from mine before but I dont park it in a garage so its not quiet like that

[SlayerT]

Could it be the fuel pump?