CODE C0900?

2013 CHEVROLET SILVERADO
283,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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EARL91
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  • 88 POSTS
CODE C0900?
Aug 15, 2024 at 9:39 AM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

The code seems to deal with excessive voltage (see pic below). What I need you to do first is to confirm the battery voltage with the engine off and then again with it running. We may have a faulty voltage regulator. Here is a link that explains how to check this. You will need a voltmeter or multimeter.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Let me know what you find,

Joe

See pic below.
Aug 15, 2024 at 7:47 PM
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