Ecm fuse location 2001 chevy astro van

It needs retiring, how many million miles has it done? ;>)

Check the wires around the fuse boxes and the ECM. Look for wires that have rubbed through to the chassis.

You are not alone with this fault

https://www.google.com/search?q=94+chevy+astro+van+ecm+fuse+blows+when+key+is+turned+on

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This is for a 2004 but should be close. If not the astro also put them under the dash on the drivers side.

Fuse panel is usually located under the dash by the driver's feet or under the hood.

Find the biggest fuse in the panel probably a 30amp that goes to something that you don't need to use right away. Use it for the ecm fuse. If the 30 amp fuse blows, you need to disconnect the ecm and reconnect to see if that makes any difference. Sounds like a short, but it could be in the harness or inside the ecm. If the 30 amp fuse holds, get to the nearest parts store and buy a supply of 30 amp fuses. 40 amp if they have them. Maybe that will get you home without having to call a tow truck.

if the headlight switch does not shut the lights off replace the switch.
unplugging the lights or disconnecting the battery is another option to turn off

Should have the codes read to find out what is setting off the light most auto parts store will do that for free

It should be marked on the fuse block

Chk. all fuses, there is a fuse for injectors, If no spark at plugs chk ignition fuse and switch, and chk. fuse for e.c.m. Can't help with diagram. Parts dept. chevy dealer will print you one out.

It is located where the big hose comming out of your radiator connects to top of engine. Remove hose from engine your thermostat is undernieth

under the hood drivers side by battery open compartment and it will tell you the location of that relay