Working on a 2003 Tahoe...
You can open the drivers door and only the lights in the door panels will turn on. I have pushed the button by the dimmer switch and tried to slide the dimmer all the way up and the lights do not turn on, but when I press the buttons in the ceiling they will come on.

Anyone know what I should be checking?

Edit: Just noticed the reverse lights do not work also.

 

bulb
...

 

They turn on with the button though.

 

ah missed that part. i know another guy posted something like this a while back

 

https://www.performancetrucks.net/fo...t-turn-523647/

 

Thanks for digging that up.

It looks like the conclusion to that thread is that he had a bad dimmer switch. I'm pretty sure that's not my issue in this case. I can press the dimmer switch on and off and the lights in the door panels do whatever the switch tells them to. Also, the dash lights still work.

Any other guesses?

 

Mine was the bulb.. Did the same thing..

 

Which bulb? Just one bulb? All of them quit at once... the only thing that has happened recently is a shop rotated the tires. Actually, the symptom popped up right after that was done.

Is it possible that a certain setting was changed while recalibrating the tpms sensors? How is it done? Can they be recalibrated through the radio or the DIC?

 

Adding another symptom: Noticed that the reverse lights don't work. Not with the keyless entry, and not with the truck running in reverse. The exterior mirror lights do come on though.

 

Fuses?