Buick Repair Questions? Ask a Mechanic for Answers ASAP
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Yes, it is related to the window problem. There is a ground pack connector under the carpet on the driver's side. That is the ground for the fuel pump, windows, door locks and a few other things.
I have seen that many times when I worked at the Buick dealership. I would take the pack connector, (SP 340) apart and run new clean grounds to the floor of the car.
Please see the attached diagram along with the location of the ground pack, SP 340, thanks
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