OBDII not working on a 2004 chevrolet silverado.?

[sean]

Does anyone know exactly which fuse goes to the OBDII. My cover is missing so I do not have a diagram. I cannot find it in the Haynes manual either. It is a two wheel drive with the 4.3. It would also be helpful if someone knows where I can find a diagram online.

 

[ohmywhatamessimin]

Can you be more specific? OBDII means, (On Board Diagnostics 2nd generation) and it is a network of computers capable of running test on the systems they control in what is called a CAN bus, meaning (Controller Area Network) there is no such thing as an OBDII fuse. Please tell us some of the symptoms the truck is having instead of the diagnosis of a fuse that does not exist. Maybe you can get some help if you try that.