It does on V8 and automatic 6 cylinders that use a solenoid style starter. manual trucks still used the old style On-Off switch. If you have a concern using the Buick switch, you could just get a known good truck switch and simply swap out the lock set, it's really very easy to do. Just put the key in, then poke a stiff wire (a paper clip will do) into the small hole to the right of the key opening. Push in on the wire and turn the key to the left, then pull towrds you. The lockset will come right out. To put into the new switch, just insert it and turn to the right until you hear a click sound.
