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  1. #1

    Default Power lock issues

    I have an '87 GMC R2500 Suburban with some fun power lock issues. The front two doors are fine, they lock and unlock normally. The rear-seat doors don't do either, and the barn doors lock but don't unlock. I'm hoping to get this fixed before too much longer since its getting annoying! I haven't ripped things too far apart to check yet since it looks like it may be quite 'fun' to do, so I wanted to ask opinions first on possible causes. Thanks in advance!

  2. #2

    Default

    Could be a short or just a loose wire.

    Check fuses but I don’t think that’s it.

    To check the wires you need to take the door pads off, I wrote a thread on how to do that a while ago.

    Then just use a test light to check the wires for power, if I remember right they just change polarity. Positive on one side to lock and then + on the other side to unlock.

    Technology is great, when it Works,
    And one Big Pain in the Ass When it Doesn’t.
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    94 GMC Burban, 5.7L (350), 4X4, Auto
    86 GMC Burban, 350, 2 WD, Auto
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    See a Pattern yet?

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