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  1. #1

    Question o2 sensor wire assignment

    can anyone tell me the wire assignment for a stock o2 sensor on a 04 silverado 1500 5.3l automatic?
    i believe the two black wires are the heater, blue is the signal, and white is ground, but i would like to be sure. i would very much appreciate any help.

  2. #2
    Jr. Mechanic GOTSAND4ME2's Avatar
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    I hope what you stated is correct lol. I just posted the same thing not realizing that you had posted it too.
    Brian
    Nor-Cal

    2000 Chevy Silverado 1500
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