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If you problably install a stereo or any wiring you may have cross wires i install a stereo on a 2000 1500 silverado and had the same problem. or the you need to replace the headlight switch $50 plus tax
Hello... These bulbs are not normally replaceable. Except when the units are replaced. Ex. The Heater Control Assembly replaced would replace the bulbs.
One thing could be causing this is, The brightness switch could be dirty. Try cleaning it with some electrical cleaner.
If this does not help you might consider taking it to a mechanic for further troubleshooting....
yes they are they take the miniture bulbs to replace them you must remove the four screws holding them on from the back side 5/16ths to get them off then slide out and allow to drop down follow wires and twist sockets out to remoce aocket and replace bulbs, ther are 4 bulbs in the dash console for ac and heat.
It could be that your knock sensor circuit is working perfectly.You may have a knock that it is reading for long periods.
Try running it disconnected, and see if there is a clatter or knock when accelerating lightly.
There is a light sensor that tells the truck if it is night or day on the dash. Make sure that is it not covered up. If is is not then you may have a bad sensor. It sounds like the sensor is telling the truck that it is night every time the truck is running.
Start the tuck with the park brake on to see if the light come on when it starts. If they do you have a bad relay if not it is most likely that sensor on the dash.
I am working on this same problem right now. The bulbs are soldered into a circuit board and are not easy to replace, but it can be done. Replacement bulbs should be available at radio shack. I am going there now to check it out. Will post more as I find it out.
the radio has a bulit in computer it also controls warning light ,door chimes and keys left in ign. and more. I changed radios and inatalled a new interface so all my chimes work correctly. no more problems.