I have a 95 B2300, and everytime I start it up, I get a series of 5 beeps then a short pause and it repeats. It goes thru 5 cycles of 5 beeps.
The beeping is coming from behind the passenger side kick panel, and is quite annoying. After driving the truck for about 45 minutes, it repeats this 5 cycles of 5 loud beeps. What is it?

 

Sounds like a backup warning for a burned out idiot light. Most likely air bags

Are all the idiot lights working at KOEO (key on/engine off)?

 

I think it is you airbags srs?. is the light on for the system. maybe the bulb is blown? check fuses? I think if the light is working there is some way to read codes from the light flashing but not sure........

 

No SRS/Air bag light with key on/engine off. No owners manual to tell me which fuse/fuses to check out of the 50 bazillion either. Ok, so I am exagerrating a little.....
I first though it was related to the seat belt, as the DS seat belt was cut by a PO, but I replaced it a couple days ago and the bleeping beeping didn't go away.

Any ideas on which fuses/relays to check first? Getting cluster out to check the bulb is a lot more complex than checking fuses. I've done had it out to replace all the dash lights......

 

Yepperz, turned out to be a burned out air bag light. Now, just need to find out what a 3-5 blink code means.....

 

Her is a link on airbag codes. It just lists the codes. Doesn't give any info on how to troubleshoot them.

http://www.airbagsolutions.com/docs/codes/f/a.pdf

 

Turns out a code 35 is passenger air bag related, and this truck doesn't have a passenger airbag. Suspect the airbag simulator is unplugged or bad.