2005 Chevy Express MidBus (Full Version)

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2005 Chevy Express MidBus

  

cwentling -> 2005 Chevy Express MidBus (1/23/2008 4:01:32 PM)

One of our drivers found this problem.  When I put the key into the ignition, a somewhat High loud tone (steady beep) sounds.  It is different than the buzzer associated with the latch on the back of the vehicle that must be engaged in order to start it.  I sounds like it is coming from the front of the vehicle.  All gauges check OK.  Any ideas?  Fuse?

  
stewdogg -> RE: 2005 Chevy Express MidBus (1/24/2008 8:58:10 AM)

Is the high tone coming on with the normal warning buzzer or is the high tone the only one you hear? Could just be the warning horn dying. Does the sound stop in about the same amount of time as the warning buzzer would take to go off?
If all of that stuff checks out I would maybe check the pumps that turn on with preignition (fuel, power steering) and see if the sound is coming from one of those.
Just for my clarification does the sound happen when the key is put in or when you turn the ignition (to pre) or all of the above?

cwentling -> RE: 2005 Chevy Express MidBus (1/24/2008 10:08:00 AM)

Hi Stewdogg!  Thanks for your response!

Well, we did get it figured out.  To answer your question first, both the warning buzzer and the tone are audible at the same time.  I can eliminate the warning buzzer by unlocking the rear entry latch.  The piercingly audible tone stayed on continually.  It is pretty loud so it was tough to drive while it was activated.  It did not come on until the ignition switch was put into the "pre-ignition" position.

What happened was one of the emergency windows had been opened.  There is an emergency exit on the driver's side one seat from the back.  The latch was in the up position and had been opened outward slightly.  The tone is triggered when the window is opened not when the latch is raised.

Thanks for taking the time to help.  Hopefully someone else will be able to use this!

stewdogg -> RE: 2005 Chevy Express MidBus (1/24/2008 10:12:01 AM)

Glad to hear that it was a cheap/easy fix.

  

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