Question about 2002 Chevrolet TrailBlazer
Complete switch will not work. Have check with a voltage tester and it is getting power. do i need to replace switch or is it something else
It depends on how far you have troubleshot. It says master switch, this is the one on the driver door, correct? If so the does the window move with the switch on the door not the master switch (drivers door). If it does move with one and not the other its probably the switch or a wire possibly a bad ground. If the window does not move with either switch it is most probably the window regulator and or motor. You would have to take off the inner door panel to get to it. I have had three of these problems. Switch had impedance/corrosion on the contacts, i kept flipping the switch between open and close and the contacts broke free. On a regulator the wire was all torn up and wound up on itself. A regulator was just not trying to move. Once it was actually one bolt that fell out of the regulator arm that was causing the regulator to be binding. Good luck.
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Posted on Jan 02, 2017
No. not the switch. Check to see if you have power going into it. I don't have the wire diagram, but you can take a test light and check each line. At least one will light up with the key on. Certainly check your fuses.
Hope this helps
Posted on Apr 09, 2010
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Window fuse's and relay's may be up under driver or passenger side dash or behind glove box, under the hood and even under the seats, and finally on the ends of the dash. All passenger power windows and locks are controlled thru and get power from the master control switch on the drivers door.
Drivers door window gets used the most so it could be the motor, window switch, relay or fuse.
Could also be a broken wire in the rubber boot going from the door to the body. You will have to eliminate each till you find the culprit. Check that all switches return to neutral when released.
The motor and the relay are the most likely to cause this problem. Try swapping the relay with a working window relay. If it still doesn't work, remove the door panel and remove the window motor.
Turn the motor shaft in both directions by hand several turns. Then plug the motor in and see if the switch will now run the motor. Sometimes that's all it takes to get it working again. I have had to do this with brand new motors. If voltage is not present at the motor connector, either a bad switch or a broken wire exists. Make sure to check for voltage coming to that windows switch. Actually, GM use's a circuit breaker type relay for each window and one fuse for all the circuit breakers.
Open the door, turn the key to the ON position without starting the engine and everything that makes noise is off. Lean down placing your ears close to the bottom center of the door or at the speaker grill. Press the window switch UP and DOWN. Listen for the window motor. If heard the drive is damaged. If not heard, turn key off and locate and replace the relay with one of the other window relays. Check window again. If it works now, get a new relay. More often than not, removing the motor and turning it by hand will get it working good as new. I have had to do that with Brand New motors! So try it.
If all has failed, with the door panel still off, check for voltage at the motor connector when pushing the window switch. No voltage means its the switch, especially if its a auto down or up switch.
Check the master window control panel on the driver's door. There is probably a lockout switch. It may have a window outline on one end and the same outline with an "X" over it on the other. Press the outline without the "X" and all your windows should work again. As silly as that sounds, a lot people hit that switch without knowing it. Also, if that switch(lockout) is faulty, none of the windows will work. That happens A LOT!!
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