K1500 don't start dash lights don't coming on nothing

Do you have power going into the turn signal switch from the brake switch, and then coming out to go to the lights ?

There is a small fuse in the cab fuse block ,for the insterment panel that is verry easy to miss if you don,t look close ,it is hidden kind of at the top of the fuse block behind the wires,

I'd be willing to bet your dash lights don't work either when you turn the headlight on.change the headlight switch, it has a short, it's only about 11 dollars at advance auto, and is fairly easy to replace. my 93 chevy did same thing, changed headlight switch, problem solved

Yes it is,the drive door actuator being non op

under the battery there is a diaphram that has a cable that runs to the front differential, if you can squeeze in there and pull on that cable and make it work you would likely have a vacuum problem... they come disconnected from the back of the intake manifold some times, and have seen the vacuum lines come loose at the transfer case.. anyway there is a starting point!

I had the same issue. Check fuse number nine.

Suspect the ignition switch.

sounds like it could be a problem with your ignition

theres a good possibility that the brake light switch is bad or out of adjustment. it is located just above brake pedal, so when you apply brakes it turns on brake lights. good-day !

you should be able to just unscrew two screws that holds the tail light to the truck, then just twist and pull to remove the bulbs then replace with a new bulb, this should fix it. otherwise its a wiring issue