Interior lighting stays on all the time on a 2001 Chevy Blazer

It has a control module according to this

https://www.justanswer.com/chevy/73rez-chevrolet-s10-blazer-4x4-1997-s10-blazer-when.html

and has its fair share of issues

https://www.google.com/search?q=1997+Chevy+Blazer+dome+light+relay

..

door jam switch is faulty or dome light switch was left in on position. If you adjust the bright/dim switch, (the one that dims your radio lights),all the way down it should shut them off regardless.

there's a black box under neath the steering wheel behind the panel unplug it it worked for my blazer i had the same problem it took me 2 months to figure it out i changed all the dome light switched and the fuses so i unplugged the black box under the dash below the steering wheel and it works fine now

You can look this up in the owners manual, if you don't have one you can download one free HERE.

one or more of the door switches are malfunctioning

i have a similar problem but mine is my when i switch my int lights on inside the truck they blow a fuse but will work fine when you open the doors ???

Need to have a scanner put on vehicle,to determine the issue. Most likely, a bad Wheel Speed Sensor.
Purchase an owners manual,so you can look up fuses and bulbs. HELM.COM

Been having a problem with the dome lights on a 99 chevy blazer. Still can't figure out what the problem is. There is a dome light overide button located under the dimmer wheel. When I push the overide button in the dome light goes off, but when I open any of the doors the dome light will not come on. When the overide button is out the dome light stays on all the time and will not turn off even though every door is closed. I checked all the pushbuttons and everything tests good. Has anyone had this problem and know how to fix it?

the part of the door the switch hit my be worn down and you may need some type of spacer if it will go off when you push the switch all the way down

Check on door panel to make sure that flat plug is not missing or broken this is located near front of door panel about midway down.it makes sure that the light switch compresses to turn off light