Solutions
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aholloway21's post in Please help! Weird noise when hitting 20 KPH was marked as the answerIf I had to put my money on it, this will the ABS start up check. Although I haven't noticed it on my VRS, it used to be quite loud on my Corsa VXR. Always did it after start up when you hit around 10-15mph.
I'm not a mechanic though so only a guess!