1996 Chevrolet G Series Van (G10) Q&A
1996 Chevrolet G Series Van (G10) Question: DIEING VAN, OR NO RESTART, UNTILL YOU WAIT FOR 10 TO 30 MINUTES. ONLY IN SUMMER HEAT.
You have to figure out whether the spark or fuel pressure is failing. The likely possibilities are that the fuel pump is failing and needs to cool off to start running again or the ignition module (also called HEI module), in the distributor, is failing in the heat. I think the most likely ignition failure is the HEI module, and that's what I would suspect first in your case. If you want to find a specialist, here's a directory link for you: https://repairpal.com/directory?address=87105&car_brand_names=Chevrolet - Superbob