2001 S-10, Blowing "ECM Batt" fuse after running for about 30 min

You need to do an OBD2 engine control module fault code test to see if the fault is recorded in the memory of the computer control module. Autozone and others do this testing for free.

A little bit of gas in your carburetor and change the spark plug that you should be golden

My 92 chevy is still blowing the ecm fuse. I have unplugged the ecm and the fuel pump and it is still doing it. What should I do next

Sounds like the computer has short in it. You can get a computer at Oreillys auto parts for around $140.00. You will need to call the part store and order the ecm and give them some info on your engine, so the replacement ecm can be programmed for your vehicle.

Check the fuses, I had one a while ago that kept blowing one of the ECM fuses. There are 2 ECM fuses one also sends power to the fuel pump too. Do you hear the fuel pump run when you turn the ignition switch to on? Just turn the key to the "on" position, not all the way to start, you should be able to hear the fuel pump run for about 3-5 seconds. I think it takes a 15 amp, I showed the owner which fuse it was and it would blow occasionally. One day it blew one right after another so he put a 30 amp in, he was out of 15's. I told him that was not a good idea. Anyway, that fixed it he drove it home and put a 15 amp fuse back in it, it's been good ever since.

need to have computer scanned to see what the cause of the light is.then you can properly address the problem.

You can clear it with a scan tool, or it will clear it self after 3 start up's if the ABS issue has been addressed and will clear from it's history after 100 start up's. The other thing you can do is to clear the ECM for every DTC codes. Place the ignition key to the run position and pull the ECM (Batt) Fuse from the fuse box for 30 sec. Then place it back in, wait 10 seconds and start the Tahoe. THE ENGINE MAY STALL, BUT LET IT. Just start it up again and let idle for 1 min then go for a test drive. The ECM is relearning the whole engine and transmission, if there is any issues the MILL light will come on and the codes will be new. If the light does not come one then there is no DTC codes and the Tahoe is clean like the day it came off the assembly line. Good luck and hope this helps.

Check the harmonic balancer

You have a short (bear wire) somewhere. Trace the wire and find it.
Have a great evening

That fuse provides power for the fuel pump. Either your fuel pump is blowing the fuse or there is a shorted wire.