Replaced 02 sensors 99 Silverado
December 12th, 2007, 4:48 PM
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Replaced 02 sensors 99 Silverado
Last year when the temp. dropped (<20F) the SES light came on, but turned off when it warmed up. This year the SES light came on when the temp. dropped, but stayed on. My truck ran fine.
I thought maybe it was the 02 sensors and with 130,000MI they probably need to be replaced, so I changed out all four.
The light shut off after about three days.
Things to know if you replace them:
Good idea to have an 18mm tap. the threads of the old sensors like to stay inside the hole (which happened to one).
You have to have real skinny arms to get to the sensor connection located before the catalytic convertor drivers side.
Besides that wasn't to bad.
I thought maybe it was the 02 sensors and with 130,000MI they probably need to be replaced, so I changed out all four.
The light shut off after about three days.
Things to know if you replace them:
Good idea to have an 18mm tap. the threads of the old sensors like to stay inside the hole (which happened to one).
You have to have real skinny arms to get to the sensor connection located before the catalytic convertor drivers side.
Besides that wasn't to bad.
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