why does ecm fuse blowout?

2000 CHEVROLET SILVERADO
14,400 MILES
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SID66
  • MEMBER
  • 1 POST
Truck was idling,then it shut off. I tried to start it and noticed ecm fuse was blown. Replaced fuse and they continued to blowout as soon as I turned key. I replaced ecm but fuse continued to blowout.
Nov 9, 2011 at 4:53 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Most of the time it will be a shorted o2 sensor or ignition coil, unplug then all and replace the fuse, then plug the components in one at a time until the fuse blows. This will be the part that needs to be replaced. Please let us know what you find. We are interested to see what it is.
Nov 9, 2011 at 5:07 PM
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