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Thread: 2000 Impala BCM wiring schematic

  1. #1
    turbo addict TopDollar69's Avatar
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    2000 Impala BCM wiring schematic

    Can anyone get me the wiring diagram for the 3 plugs on a 2000 Impala BCM?

    Thanks,

    Save on fuel and get a gas card. Learn these deals in Publix Ad.

    Ben Huebner
    Last edited by BadAssPerformance; 11-11-2020 at 12:42 PM.
    84 Laser XE TII A555 89 Caravan SE TIV A568

  2. #2
    Garrett booster
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    Re: 2000 Impala BCM wiring schematic

    Theres 14 diagrams for the bcm,heres power/grounds,the early bcm were junk,Ive replaced them rt off the

    delivery truck!What specifically (circuit wise) are you trying to repair/modify?Give me the pt# off

    bcm and I can tell u if its an early design-------

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  3. #3
    turbo addict TopDollar69's Avatar
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    Re: 2000 Impala BCM wiring schematic

    I will try to get the part number today. My friend is having the typical problems with the passlock II system and i was going to bypass it with a resistor. I found the yellow and black wires that I believe are for the sensor but after I installed the 2.2K resistor between the yellow wire on the bcm side and spliced into the black reference wire the security light just comes on all the time. It starts fine now, but I was of the understanding that after reprogramming the BCM to the new resistance that the light would go away. The way it is now with it starting fine but the security light on all the time makes me think I have the wrong black ground wire.

    Basicly what I need is the pin and plug locations for the 2 or 3 passlock II sensor wires at the BCM. If I have to I will trace them from the ignition cylinder to the BCM, but I would rather not have to take the ignition switch out if I don't have to.

    Thanks,

    Ben Huebner
    84 Laser XE TII A555 89 Caravan SE TIV A568

  4. #4
    Garrett booster
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    Re: 2000 Impala BCM wiring schematic

    Resistors were OK w/old key pellet design,but not great w/bcm controlled systems,

    It needs to see on/off signal when turning key(magnet triggered)possibly why

    light remains on,never saw on/off signal also if fooling around w/system

    while running and trigger security system/light will allow restart,but

    once battery/power(ie replace battery) disconnect your done==no start

    What codes are/were setting?,if DTC B2647 and/or B2648 Set

    (Replace Body Control Module)this is a bullentin!

    If other passlock codes were setting more than likly passlock

    sensor(connection get corrosion)magnet gets weak

    and throws off resistance to bcm(I pack all connections w/dielectric lube)

    also ck connection pull,If it wont

    hold connector pin(bad connection=poor resistance)here some more diagrams

    connectors c1 & c2 are used(c1=pink c2=gray)c2 pin A3-YEL wire(circuit 1836)

    is defined as== Magnetic Rotation Detection Sensor Signal===

    GOOD luck-Richard



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  5. #5

    Re: 2000 Impala BCM wiring schematic

    Thanks a89mini for an ideas..it's very helpful.

  6. #6
    The moderately moderate moderator Turbo Mopar Staff
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    Re: 2000 Impala BCM wiring schematic

    The resistors will work, but they need to be damn near exact on values. I have done it on both Malibu's and Imp's. I usually end up replacing the ign cyl on the Malibu's and the BCM on the Imp's.
    Bryan
    86 GLHS #161, 2016 Impala
    SDAC National Member, SDAC Buckeye Chapter Member

    A man has got to know his limitations.....

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