Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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Are you looking for possible causes?
Has anything been replaced for this problem up to this point?
Got it! Thank you for that information. One minute please..
There are two wires coming from the switch to the window motor. One wire gets power while the other wire gets ground to move the window up. Then it switches polarity to move the window down. You could have a bad motor, bad switch, or a wiring issue to going to and or coming from the switch. The easiest way to check this is to use a test light and hook it up between both wires to ensure it lights up both in the "up" and "down" position.
Yes Sir I can.
Sounds good Pete. Thank you very much.
Here is a wiring diagram of this circuit.
That means the brown wire is not getting and suppling a ground to the window motor. I bet if you ground that wire (as long as your on the correct brown wire), and push the switch up or down the window motor will move.
The switch gets a ground on the black wire. If this ground going into the switch is good, then it is likley that the switch is bad and will need to be replaced.
This will be helpful. Pin 10 and 12.
Ok, it sounds like the switch itself is at fault.
Right. Remember what I mentioned earlier. One wire will have power while the other has ground in the "UP" position. Then it will switch polarity when you push the switch to the "down" position. So if the switch is not sending the right signal and it has the correct inputs, the switch is at fault and will need to be replaced.
No sir. Thats not how it works. The switch supplies power to one of the wires and ground to the other one when you push the switch up.
And then the wire that WAS hot does to ground when you push the switch to the DOWN position.
YES, it can.. the relay inside the switch.
But you cant replace just the relay. The entire switch needs to be replaced.
YES, you should. If it does not work, switch the power and ground around and the window motor should switch directions.
If that does not work, the window motor is bad and needs to be replaced.
Sounds good no problem. I am glad we got to the bottom of it. Simple enough right? Provided the switch has a good ground going into it, it is bad and needs to be replaced.
Talk to you soon!