Brake/ Blinker lights staying on after shut-off?

[snipe98]

Howdy all. MY 1st post is a concern I have with my 2002 s10 (4.3L).
As the title implies, the brake/ blinker light stays on after I shutdown, which WAS causing the battery to go dead inexplicably. I've since removed the bulbs, until I can figure out wth the problem is.
Is it:

A: the ECM

B: the brake light sitch

C: component to be named later

D: a short SOMEWHERE in the frame

Any help is GREATLY appreciated
Thanks

[MT-2500]

Turn signal and brake and 4 way all run threw the turn signal and 4W switch.

First make sure you 4 way button is not on or stuck and working right.

Push it up and down a few times.

Is it the front and rear blinker or just rear blinker/brake lights on?

Does and dash indicators light stay on or blink when you use turn signals?

Can you kill the lights by pulling your flashers?

[blazes9395]

Can you be more specific? Just the brake lights and or also the third brake light? Is it the hazzards, or just a single signal, left or right is on? The multifunction switchs were a common problem and caused issues with the brake lights and signals. There was either a TSB or recall on the multifunction switch issue.

[snipe98]

I think it's the 4way switch underneath the dash. It doesn't happen all the time, so I just picked up a replacement, along with a Haynes manual, and left them in the truck. It happened a couple of times when I was out Sat. shopping, and I was taking the bulbs out of the tailights when they were stuck on. And yes, they are only the tailights.
I was initially worried that I was looking at a short in the sys., but I'll have to wait see?