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  1. #1

    Default 05 trailblazer o2 sensor 4.2

    hey people i need help.
    I replaced my exhaust manifold and o2 sensor (cracked) but I had to change the connector on thr new o2 sensor (it was square trailblazer like triangular)

    well i messed up now I am trying to find from fellow owners what the diagram is.

    my o2 sensor has
    and I need to figure out which wires they correspond with ( or ABCD) if someone would be so kind as to look at their connection right behind the power steering pump for me I would forever be greatfull.

  2. #2


    light still coming on replaced o2 sensors and water temp sending unit twice WTF

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