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vss pin

Discussion in 'The Garage' started by nerraw117, Aug 22, 2005.

  1. nerraw117

    nerraw117 1/2 ton status

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    hey does anyone know the pin on the ecm that is the vss input? or drac w/e. is it pin A10? and snyone know how i can tell which pin is which? like a diagram its for a 90 blazer tbi. o and btw my ecm number is 1227747
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    It's here

    Look closely at the connector where the wires go into it, you will see the tiny cast-in numbers on the connector body (or the locks for the wires), plus if it's a typical two connector ECM, it will be divided in "A", "B", "C", and "D" sections, each row of pins is one of those 4. That designation is also cast into the connector body or locks.

    So "A10" is going to be the 10th wire on the "A" side of the A/B connector.
     

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