I have exactly the same unresolved problem with my 2002 LS. I have found nothing in the forums for a fix and no sign of a recall. I will look at it myself.
The LED's are bright during the day and very dim at night, the backlighting is dimmed all the way down at night.
Two years ago, we could rap on the left side of the dash and it would return to normal. That hasn't worked in one and a half years. I think it is a bad connection on the panel, a bad coil in the dimmer knob, or a disconnect at the dimmer knob.
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Sunday, January 6th, 2008 AT 10:22 PM