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It is "no bus". It means the cluster is unable to communicate with the other controllers through the PCI bus. The engine controller tells the cluster fuel level, engine temp, and oil pressure. The transmission controller and ABS tell the cluster to display speedometer functions, warning lights and such. Air bag communicates when to turn the light on and so on.
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What kind of car ? year , make , model etc..... Checking the electrical circuit , fuse , horn relay , switch on the steering wheel would be the way to start your diagnoses . Do you know what a relay is . Any lights lit on the insturment cluster ? AIR BAG ! VEHICLE RELAYS Operation Diagnosis
that message is probably "no bus" which means the instrument panel is not communicating with the body computer or engine computer.
It could be a bad connection in the wiring or a problem with the cluster.
You can do an internet search for "no bus" for details.
Might be using the current for the cluster lights to power the radio, or a problem with the ground connection. Check the wires you connected the radio to. Try unplugging the radio to see if the lights work again.
register for yahoo.com if you don't have a user name there. Then go to chevy.com ( you have to have a yahoo id name to log into the chevy site) Then register your car make and model. Once you have done that you can look at your cars owner's manual and it will tell you what each light is on the insturment panel and from there hopefully you can determine what is wrong.
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