Question about 1991 Buick LeSabre

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Need to know where the ground for the power window circuit is.

I have a 1991 LeSabre, and I cannot find a copy of the electrical service manual. My power windows work but are SUPER slow. I replaced the motors last year but it did not cure the issue. If I could find the LOCATION of the ground for that system I could check/clean/fix it, possibly making the windows usable. Rear windows are slow when controlled from drivers door, but are normal when controlled from their own switch. Haynes manuals are too genaric, cannot figure out.

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  • carguy455 Jan 13, 2009

    Nope, did that allready , even tried using a wire to jumper them in the socket, smae result. I need to physical LOCATION of the ground for the power window control. Passender side window is slow from its own switch or from drivers side, only rears work well from their own switches.

  • carguy455 Jan 13, 2009

    My head shall be under the dash tommorow AM !

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  • Master
  • 1,990 Answers

If the Windows work good from the other doors, You need to replace the Switches on the Driver Side Door. Once they are worn like this they have a Hard time Operating to Full Capacity.

Posted on Jan 13, 2009

  • Travis Humphries
    Travis Humphries Jan 13, 2009

    Your Common Ground for this Should be Right Under the Dash on the Drivers Side. Feel around just up Under the Lip of the Bash. There is a Bolt up there that has the Wires Grommeted to it for the Dash and Doors Ground. Could be Pretty hard to Find.

  • Travis Humphries
    Travis Humphries Jan 13, 2009

    GOOD LUCK BRO! Let me know what you find!

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