Service engine light came on at 35K oil change. Took to dealer for change
and asked him to check light. He said light wasn't on, but got a possible
O2 sensor failure code. Fast forward 2 weeks...light is on again!! How
much will this O2 sensor(s) cost and am I causing any damage by driving it?
(01 Tahoe LT 4X4)
You have 4 02 sensors. We need to know which one is setting the code and
what code is being set. There are around 40 different error codes for the
02 sensors, and without knowing which one, we can't help. Get thee to
Autozone and have them scan your computer (it's free) for DTC (diagnostic
trouble codes). It will look something like this : P # # # #.
When you get the code(s), post em here and we can troubleshoot for you. New
02's for yer' truck will run around $75 apiece, but there are many things
that can set 02 sensor codes that have nothing to do with the sensor itself.
Pretty easy to get to. You'dd need a 7/8" box wrench or 02 sensor socket +
a can of PB Blaster to get the sensor out of the manifold. These tools can
be bought at any auto parts store as well as the sensor.
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