So, what happened with the suburban, I was driving, had just gotten on the highway, accelerating from 55mph, and suddenly the gas pedal did nothing. The engine was still on, the brakes were normal (a little squishy), the stereo and AC worked just fine, but the gas pedal refused to do anything. Pulled over, turned the car off, sat on the shoulder for 15ish minutes, started up the engine twice more to try to get it to work. Third try it worked. Drove another 8ish miles, same problem, pulled over, entire routine repeats itself. Third try works, engine sounds normal. Drove another mile, happens again. At this point I’m pretty pissed, and so are my brothers in the car with me. As we were only a mile from home, and the engine still worked, I put it in neutral, and while the lightest of us steered, the other two of us pushed fueled by our anger. Took turns steering and pushing for a good 1/2 mile, then tried the gas and it worked. Drove home just fine. My grandpa, an experienced mechanical engineer with plenty of vehicle-repair experience, came by two days later, don’t know exactly what he did but he said that the fuel line was missing an o-ring seal, and had been leaking, and that had tripped some sensor, which refused to let the gas pedal give more fuel to the engine. He thinks the ethanol ate away the ring. He said he put a new o-ring on it and was gonna get one of higher quality in a week or so, but the current one should hold. Over the next few days we had no problems. Then, family outing with the kayak, so we took the suburban, about 45 minutes into our hr long drive, same deal, no gas pedal response, only this time the power steering went out too. Had a local friend tow it to his house, picked it up on a trailer a week later, still sitting in the driveway. Pretty stumped. Debating whether or not to take it into the shop and run a full diagnostic. The car is only worth maybe $800.