97 chvy 5.0 -ECM B fuse blows - Wont Start - Replaced ALL parts

get a multi-meter and start testing your work for shorts and or damaged wiring

ECM = Engine Control Module, Computer for short
If its blowing then there is a short in the system someplace, prolly a wire that has been wore bare and is grounding when it shouldnt.

Since they replaced the batt. check your terminal connections, it might have been tightened enough to drive it but now is lose, it takes more to start a vehicle than it does to run one.

The ECM could cause it to stall cause it controls electronics, but it could be the terminals being lose as well, your radio and lights will work beacuse they dont draw as much voltage so theres not as big of a need for a good connection, not that thats good but thats how it works.

Lets start at the beginning.
Did you check the fuse circuit for the ECM to see if it has power ?
The problem could be the ASD relay which powers several circuits.

My 15 amp fuse keep blowing soon I tried to start my car I replaced my fuel pump in my ecm replaced what do y'all think it is

Sounds to me more of a wiring problem with a wire too thin or the wire insulation going to ground causing fuse to blow.

Sounds to me its time to replace your ecm

Do you have power at the fuel pump? When they go bad they like to blow the ECM B fuse, it's a 20a in the underhood box.
Otherwise is there any codes for the securtiy system?

A fuse blown is a short, and a short is a ahort.
The fuse is the ecm so unplug the ecm and see what happens. If the fuse holds with theecm unplugged, then it is your ecm that needs relacement. If it still blows, The short is in the wiring.go to the parts store and pick up and automatic circuit breaker. It plugs in where the bad fuse goes. It will trip and reset itself automaticallly like a flasher until you have located the short. trick, Start with a breaker of amp. examole; if you took out a 20 amp, put in a 10 amp so the breaker trips faster, On and off quicker so you don't have to wait between ressets. If you want to trace the short by the wiring, put a 25 amp or with great caution a 30 amp. That is the limit. The wire will get warm on the 25 and even warmer on the 30. Pay attention that the wire does not get hot. Hopefully yhe 25 will get the wire warm enough for you to follow. Good Luck, Ned. This method is dangerous if you don't pay very close attention using the high amp breaker. There is a risk of fire if the circuit cannot handle 30 amps. In fact, only yuse the 30 amp breaker if the 25 breaks and resets too fast. Good Luck_Ned_

Change fuel pump relay.And check the fuses

1996 GMC 1500 Pickup.
Replaced Coil, Dist cap/Rotor, Ign Mod & pick-up.
All showed to be bad with OHM meter.

20A ECM-B fuse keeps blowing out and I'm afraid to burn these new parts up....

ANY IDEAS OUT THERE???