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Service Engine Soon Light

spackler

By spackler
in Ask A GM Technician

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spackler New Member

spackler

Posted
Posted

I recently replaced the exhaust on my 1999 K1500 Z71 pickup from the cat back. I drove the vehicle before I replaced the oxygen sensor. The service engine soon light came on as expected but I expected this to be resolved once I replaced the sensor. This did not happen. Sensor is a new AC Delco AFS 106 - same as original part. Is there a reset on the check engine light?

 

Thanks.

GM-Tech Senior Enthusiast

GM-Tech

Posted
Posted
Is there a reset on the check engine light?

 

No, you need a scanner. But if the sensor did correct the problem, the light should go out on it's own after three consecutive ignition cycles that the diagnostic runs and does not fail. If you drive it frequently, this should happen in a day or two.

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