What causes the turn signals and hazards to work sometimes on a 1994 Jeep Grand Cherokee?

you have a bad blinker switch in the steering column chryslers have a problem with wires getting to hot and burn together causing a short I think you're right. When the flasher doesn't work, I can hit the lower dash by the relay/flasher and it'll work. Darn local dealer wanted $50 for the flasher module! I can get online for about $30........I'll post my results. : : My JGC had the same problem, and I have replaced the multifunction stalk two times without any success,but after replacing the relay unit everything was back not normal again.