I have a 94 suburban and when I drive it for a while it shuts down and it seems like it only shuts down when it gets warm But when I shut it off it will start right backup I can't figure out what it is

Hello, it's all a bunch of guessing until you see what element has failed -- ignition spark, fuel delivery, air intake... It's hard to know until you measure and then trace down the faulty component from there.

Have qualified personnel check for ANY lateral movement of the distributor shaft - fully warm engine.. There is 0 tolerance! IF movement is present - replace distributor assembly - this also gets you a new ignition control module and pick-up coil.. Recommend NAPA 1st line parts. 1994 probably needs this.