Check engine light not working

Tiny
LWATTS
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 4.5L
  • V8
  • 2WD
  • AUTOMATIC
  • 161,000 MILES
Can you change out the check engine bulb or your do you have to change out the hole cluster? I had a emission done and it said that the check engine was out.
Friday, January 10th, 2020 AT 1:56 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

You cannot replace the bulb. You have to replace the cluster to get that to work.

Did anyone check to see why it is not working?

I sent a diagram for you to view. The light is controlled by the ECM. Check the wire at the cluster for power. I highlighted the wire that you need to test.

Roy
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Friday, January 10th, 2020 AT 3:07 PM

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