Truck starts then cuts off after engine warms up

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Your 1994 Chevy cutting out when warm sounds like a classic heat-related failure. The ignition coil or ignition control module could be the culprit—they tend to act up as they overheat. When they cool down, they work again, like the world's laziest employees. Also, don’t rule out a failing fuel pump or clogged fuel filter, especially if it’s struggling to keep up with demand. Diagnosing with a spark or fuel pressure test after it stalls will pinpoint the issue. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.