Another buzzer mystery

[Scouter]

Hello, I've read through lots of buzzer posts, but haven't figured out the reason for my buzzer going off. I have a "new" 2001 21 passenger Mid/Chevy Express cutaway short school bus. A buzzer goes off when I turn the key to the On position. If I start it, the buzzer stops. It's not the vandal lock or roof latch. Any thoughts on what this buzzer is?

[o1marc]

Brake pressure warning?

[Scouter]

Hmm, wonder if I have one. Would that be the only warning or check engine light also?

[o1marc]

Originally Posted by Scouter

Hmm, wonder if I have one. Would that be the only warning or check engine light also?

Nevermind, I doubt you have air brakes on the Express.
Go to the UserCP and fill out your profile with location and bus info.