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2015 durax lml

135 Views 3 Replies Latest reply: 2026-04-28 09:43:42


  •   Level 1   
    (8) points

    2026-04-17 15:21:45
    2015 duramax lml. Output speed sensor not reading. Replaced it twice including a new TCM and still no read. Any help would be appreciated

    Tags: P0722-00

    Reply

  •   Level 10   
    (9054) points

    2026-04-17 20:56:29 (Reply to:)

    Hi, check the wiring harness for corrosion or damage check continuity(5ohms) and
    inspect connector on sensor.
    Reply

  •   Level 1   
    (8) points

    2026-04-25 13:47:47 (Reply to:)
    Checked continuity from the TCM harness back to the output speed sensor connector.
    Less than 1 ohm. Wiring seems to check out fine. I can't get any resistance reading on
    the sensor itself even though it's a brand new sensor from the dealer.
    Reply

  •   Level 10   
    (9054) points

    2026-04-28 09:43:42 (Reply to:)

    Hi, check the wiring ground connections, beginning at the battery. After this try a deep
    reset and than check again.
    Reply
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