Dashboard Dimmer Repair Or Replacement

[rcchevy]

The Mileage/MPG/TirePressure, etc display is too dark to read during the day, and I would like to fix it or repair it, but I cannot find where to buy this dimmer, and it doesn't look repairable.
Any ideas are appreciated. Please see the attached photo.

 

[4549stiltz]

The Mileage/MPG/TirePressure, etc display is too dark to read during the day, and I would like to fix it or repair it, but I cannot find where to buy this dimmer, and it doesn't look repairable.
Any ideas are appreciated. Please see the attached photo.

Was it ever brighter during the day if not I think it is operating OK. I don't think the dimmer switch you are referring to controls the brightens during the day. It is just for the dash lights including the DIC display at night.

 

[4549stiltz]

I found this for your vehicle.

When the ignition switch is turned to the ON position, the VF display, radio, turns ON at maximum brightness. When the park lamps are ON, all incandescent back lighting turn ON at the dimming level indicated by the instrument panel (I/P) dimmer switch. At the same time all VF displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the I/P dimmer switch through the I/P dimming lamps control circuit. The setting of the I/P dimmer switch determines the amount of voltage that the I/P dimmer switch supplies to the BCM through the I/P dimming lamps low reference circuit. The BCM then sends a pulse width modulation (PWM) voltage to all the interior lamps. All the VF and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the park lamp or headlamp position, all incandescent back lighting turn ON at the dimming level indicated by the I/P dimmer switch. When the I/P dimmer switch is moved from MIN to MAX, all VF displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the I/P dimmer switch.

 

[rcchevy]

Was it ever brighter during the day if not I think it is operating OK. I don't think the dimmer switch you are referring to controls the brightens during the day. It is just for the dash lights including the DIC display at night.

Yes, it has been much brighter during the day but that happens without my interaction, here and there. The dimmer wheel operates from nothing showing to a brighter setting, which I can't read during the day here in South Florida; in its random brightest setting, I can read it clearly.

 

[4549stiltz]

what controls the brightens of the lights is the BCM and dimmer switch just tell the BCM where you want it. I don't think the dimmer switch is acknowledge by the BCM when it is daylight outside, but I may be wrong, but according to the above insert I sent that is the way I interrupt it. I retired from a GM dealer 12 years ago, so some things are a little foggy HA HA

 

[rcchevy]

Good news!
Now the display is at a brighter level than before during the daytime. I assume that my disconnecting and reconnecting the Dimmer-rheostat had something to do with it. I have done nothing else to it.