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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevrolet Express 3500 LS: my power window goes down but not

Customer Question

my power window goes down but not up in Chevy express 3500. Replaced the motor and still the same
Submitted: 2 years ago.
Category: Chevy
Expert:  Randall C replied 2 years ago.
Hello, I am Randall, which window? thanks
Customer: replied 2 years ago.
Front right
Customer: replied 2 years ago.
I have tested the motor off the car and it only runs one way.
Customer: replied 2 years ago.
The other one works. This doesn't w9rk from either switch.
Expert:  Randall C replied 2 years ago.
you have 3 wires to the motor, can you tell me excatly how you are jumping/testing to say it runs only one direction? thanks
Customer: replied 2 years ago.
Its a 2 wire plug. When i press the button to go down, onevside lights my test light. When i press up, the other side lights up.
Expert:  Randall C replied 2 years ago.
yes, I wordered wrong, meant 3 wires to switch, where are you testlig? you need ground lead on the motor, then probe blue hit switch, then move lead to brown, hit switch, you are saying you have done this power goes to motor on both side/both wires but motor still only runs one direction? if so, you said you jumped the motor, how did you do this? ground to one? power to other wire then reverse them? it should then run the other direction. another test is groun to one wire, pos tester lead to the other work switch, then reverse that setup. hard to explain. if wiring diagram will help you, I can send it