Question about 2004 Chevrolet TrailBlazer

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Back light for radio,speeodmeter,widow buttons

They stated going off and then they will come back on sometimes mostly in the day time. if they our on and i push the fog light switch the backlights fot the speedodmeter,radio,window buttons go off untill i re-push the fog swithch. everything else works on the car. HELP

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  • mycarfix Oct 22, 2008

    HAD the same problem, about the time my factory waranty was up. I never took it in or did anything to it, it finally stopped. Been fine for about a year now. Doubt this helps, but you are not the only one with this issue. I did call my dealer they said yeah, we have had a lot of problems with the electronic on that model. . . . .

  • nytro8 Dec 18, 2008

    I have the same problem to include my AC,dome lights and all gauges on the instrument panel


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Replace the switch, it sounds like it hs a bad connection.

Posted on Nov 26, 2008

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I have a 94 camaro that has what I believe (advice from another) to be a bad ground. Can someone please tell me the places the grounds are located?? The problems I'm having are overheating, no highbeams,...

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My radio lights are on but no sound, what do I do??

Try to mess with the fade and balance. It's possible you have one or two bad speakers and the radio only has the bad ones getting power.
If you have a remote or can borrow a remote (or have steering wheel controls) try to change the volume with it. Your volume button could be bad on the radio.
Something else you may want to try; first make sure you have your unlock code for the radio! Then remove your radio from the dash. This will take some time but be patient you don't want to break anything. Once out unplug all the wires and wait about 10 min's. This will sometimes reset the radio but if this works it will most likely go back out in due time. This will give you time to get a new radio.
You could try to pull the fuses to the radio instead just make sure you get them all or disconnect the battery for a while. These two may not do anything sense some pcm or ecu have their own battery back up and the radio will use it for it's memory if it can.
Another way to check the speakers is to do a oil lift reset. If I remember right; you can do the reset though the radio and it should chime over the speakers.
Most likely the channels have burnt out and you will need to replace the radio. Stay with an OEM shop ebay.

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Then you are saying the switches are part of radio? then the fault is with the radio, there is no computer that runs the radio. Pull the radio and send it out for repair through your local GM parts dept to a authorized GM repair facility, it is not user serviceable.

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