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  1. #1

    Default 1990 silverado pw conversion

    Just a couple questions.
    Are the pw controlled thu the computer on these trucks?
    Where can I find a wiring diagram for this?

    thanks
    Duane

  2. #2

    Default

    Quote Originally Posted by jiterbug View Post
    Just a couple questions.
    Are the pw controlled thu the computer on these trucks?
    Where can I find a wiring diagram for this?

    thanks
    Duane
    I don't know for sure on your year....but I believe they are controlled via the BCM on the NNBS style trucks.


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  3. #3

    Default

    Pretty sure on a 1990 model there is no BCM, and it's just a switch, relay, and motor. If you get a Haynes manual that fits your year, it probably has a wiring diagram in the back. You can probably look to see, if there's one not wrapped in the plastic at your local AutoZone or Advance, or your library probably has some manuals, or allows you access to a site. Or you can probably just google for a service manual or diagram too, and find something.

  4. #4

    Default

    thanks for the replies. I will look for a haynes manual. I googled 1990 silverado wiring diagram but couldn't find anything useful.

    Duane

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