my ecm is going bad?

2004 CHEVROLET SILVERADO
223,900 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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SOONERSFAN75
  • MEMBER
  • 1 POST
How can I tell if my ecm is going bad? What symptoms should i look for?
Apr 17, 2026 at 1:37 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Hello,

Usually it will have many trouble codes or the ECM will not communicate with a scanner can I ask what problems you are having to make you ask this question? It can be the computer has a bad power source or ground connection. Please let me know. Ken
Apr 18, 2026 at 9:11 AM
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