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When we have our headlights set to the "auto on and off" mode, our speedometer lights don't come on during the day. The speedometer lights on the dash will come on automatically only if the headlights are in the mode where we have to manually turn them on and off.
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Yes the headlight are left on auto all the time. Don't forget you have daytime running lights (DLR) which are a function of the headlights but not a s bright. So the headlights would appear to be on during the day, but it is the DRL system that is doing that.
The same thing happens on my 2003 Impala. I found that my dimmer switch has an intermittent failure where sometimes the dash lights go out even with the headlights on. If I wiggle the dimmer just right, the dash, radio, steering wheel, door locks, and every other light comes on (when the headlights are on). My fix was to mount my Garmin on the steering column in front of the speedometer so when the lights go out I know how fast I'm going. A replacement dimmer (or bypassing the current one and adding a resistor) should take care of it.
Check and see if the auto headlights are coming on when this happens. If so have the light sensor in the top of dash replaced or don't use the auto light setting.
You have your headlight control set to auto and your light sensor on the top of the dash is either faulty or fallen out of it's bracket and can not sense light.. turn your headlight control to off and use your headlight switch in manual till you get your sensor problem fixed..
The Body Control Module is the problem.Models with black faced gauges are most noticeable. Also,on rainy,foggy,or overcast days, the headlights will come on,but the instrument panel lights do not.GM states these condition are "normal" and refuses warranty service-Document ID# 1530511
Yes, the headlights normally will come on during the da. There is a photo sensor that controls this feature. You may refer to your owner's manual before assuming that there is any major issues. It is possible that this feature has been disabled at some point in the past. It is also possible that these "daytime driving lights" will only come on while the vehicle is in gear. In either case, I would definitely refer to your owner's manual to find out the details of how this system works, as many of today's auto manufacturers are starting to use a variety of different methods for enabling/disabling these types of features. Hope this helps and have a great day!
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