Some of the dashboard lights are out.

u got 3 places it could b under dash on the sides of dash or under the hood next to battery

check for a pull a part in the area you live

The problem is %90 likely to be a blown fuse. I was recently driving around at night, conscious of the fact that my dashboard (gauge) lights were out, but was unaware of my tail (driving) lights being out as well. This lead to an unpleasant run-in with the law.

i fought the law and well,
the law won.

but seriously, look in your fuse box, im not aware of exactly the suburban but i drive a '97 S-10 and they are under the steering column/dash. You gotta lay on your back to get up in there alot of the times. I know in newer chevy's they're under the hood but, should be a 20A fuse, good luck.

Check your battery see if it's good. It is check alternator.

First check the fuse and replace if it is blown. If fuse is OK, then it sounds like the brake light switch has failed. It is located on a bracket under the dash near the top of the brake pedal arm. You could put a bridging wire across the terminals to confirm if the switch is out and the rest of the wiring is OK. If the lights then work replace the switch.

To remove switch, disconnect wiring, loosen locknut and unscrew switch. Replacement is reverse procedure. To adjust, screw in switch until operating button is fully depressed by pedal arm, tighten locknut and reconnect wires. Check for correct operation of lights.

probably have a bad ground to the dash cluster or the dimmer is shorted

sound like a bad battery or connection on the battery

usually the door arm rest has a bolt or screw in it and the rest of the panel should pop off with some force but becareful not to break panel stick aflat screw driver or a scraper under panel as you start to pop off panel

check all power outlets for loose change or metal objects in the doubble check the rears. fuse should be located on drivers side fuse pannal on side of dash