Question about 1981 Chevrolet Corvette

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My 81' vet

The window does not want to work. How do I fix it?

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The windows are electric. They have electric motors that raise, or lower, the window up and down. Power to the electric motors comes from the window switches. One window switch for each door window. Power to the window switches comes from the fuse panel.

First thing to do, is to check the fuse in the fuse panel, for the windows. If you do not know which fuse it is, and it is not marked on your fuse panel cover anymore, I invite you to go to your nearest auto parts store, and buy a manual of your Corvette.

The next thing to do is to remove the window switch that corresponds to the window that doesn't work. Turn the ignition switch to On, and use a multimeter to test it. Set the multimeter to DC volts, and the 50 volt scale.
If you don't have a multimeter, I invite you to buy a cheap one. They're usually about $12 dollars.

Find a non-painted surface for a good ground. The Black probe lead is the Ground lead. (Negative) I usually try to find a clean, non-painted surface, that I can wedge the tip of the Negative probe lead into. Frees up your hands.

Use the Red (Positive) probe lead, and touch it to one of the terminals of the window switch. One of those terminals should be 'Hot'.

If not, you are not getting power to the window switch. Your problem goes towards the fuse panel.

If so, your window switch is bad.

Fuses and window switches, are two of the most common problems.

If you aren't getting power, it could be that a wire has the insulation rubbed through, and is shorting out. Or it could be that fuse.

If you are getting power to the window switch, then it may be a wire to the window motor that is bad. Or it could be the window motor itself.
After 28 years, your window motors have seen a lot of usage. Also the door seals shrink for the windows, and this allows rain, or snow to make it's way into the door. Right down to the window motor. If you are a Corvette owner that always keeps their Corvette garaged, and NEVER takes it out in the rain, don't be hatin' me! lol!
Obviously a rusted window motor is not your problem!

It may be that the Ground wire to the window motor, has developed corrosion on it's terminal end.
(Isn't wiring Fun? (!)

You can test the window motor, by using a jumper wire connected to a good ground, and alligator clipped to the Ground terminal of the window motor. Then use a Hot jumper wire, and touch the Positive terminal of the window motor. You will see a spark when touching. Just wanted to warn you. Don't be standing in water as you do this test!

Posted on Apr 18, 2009

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