Check engine light will not turn off

2001 CHEVROLET SILVERADO
165,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC
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JKSVEDA
  • MEMBER
  • 2 POSTS
Check engine light will not go off it is own because of knock sensor. I have had it scanned and reset and it comes back on. so I fixed knock sensor and harness and still comes back on. now I worked on it again to check everything and I tried to reset the service engine soon light by disconnecting the negative battery post and turning headlights on to drain stored power and it still will not go out.
Dec 20, 2019 at 10:52 AM
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KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
Can you check the codes and send me all the codes that are there?

The engine light is telling us there is an issue so we need to start with all the codes and go from there. More than likely there is another code or something more to this knock sensor code that we are missing. Thanks
Dec 20, 2019 at 7:35 PM
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JKSVEDA
  • MEMBER
  • 2 POSTS
Okay, thanks.
Dec 21, 2019 at 11:06 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
This guide can help you see how to get the codes:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
Dec 21, 2019 at 11:07 AM
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