Why do my dash lights go dim, and other times wil be real bright? on 2008 Chevrolet Silverado 1500 HD

dash lights go dim. The the next time you start up they will be real bright. This goes on every day

Asked by for the 2008 Chevrolet Silverado 1500 HD
is it possibly when your headlights turn on? there are setting in the new vehicles that I would check first. also make sure there are no papers or anything blocking the little sensor button on the dash for your lights.
this happens when the lights are on or just parking. only the dash lights go dim
1 more answer
Sounds like a bad dimmer switch. Try moving the switch and see if it acts up. Dont forget to turn on the headlight when doing so. Otherwise you may have a problem with the charging system.