Brake lights not working

[98k1500girl]

I have a 98 k1500, recently the brake lights stopped working including third light. Turning signals and running lights still work. When barley pushing down on brakes they work but any farther to actually engage the brakes they flash on and then stay off.
I checked the bulbs and the fuse they were fine but replaced them anyway. I replaced the brake light switch as well and they’re still not working.

 

[frito-bandito]

Have you recently replaced the brake booster?

 

[GoToGuy]

If you have running lights and turn signals, it's not bulb problem or a fuse problem or a wire problem. It's most likely something to with brake switch, as you have no center light either.

 

[98k1500girl]

If you have running lights and turn signals, it's not bulb problem or a fuse problem or a wire problem. It's most likely something to with brake switch, as you have no center light either.

I assumed it was the switched replaced the rest just because I already had the parts. I replaced the switch and still no luck

 

[98k1500girl]

Have you recently replaced the brake booster?

No I haven’t. Would that cause the issues? or is it something I should be doing?

 

[GoToGuy]

Download the service manuals for your truck , search the link in forum. Here's the wire diagram . In book 2 chapter 8A-110-12. Has the diagnosis chart to walk you through it.

You must be registered for see images attach

You must be registered for see images attach

 

[frito-bandito]

No I haven’t. Would that cause the issues? or is it something I should be doing?

No, I was just wondering because I recently went through this issue after changing my booster.

 

[HotWheelsBurban]

Apparently it's a common thing for the brake light switch to go out after the booster is replaced (from what I've heard and read). But not common enough for people to replace the switch when doing the booster (which would be an easier time to get to it!). When the hydro boost unit was replaced on my crew cab, shortly afterwards the brake lights quit working. Replacing the switch fixed them, but I had to practically stand on my head to do it.

 

[98k1500girl]

Replacing the brake light switch was one of the first things I did since it is common, but still not working

 

[Rickf]

You might try testing the new switch, could be bad.