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1988 chevy c2500, passenger window


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dennismenace 
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Location: Iowa, United States
Posted: March 16, 2017 at 5:09 AM / IP Logged Link to Post Post Reply Quote dennismenace
I need help with power windows in my 1988 chevy c2500 truck I just bought. Passenger window won't roll up and down. Good motor and regulator I'm not getting 12v to one wire when I press the up switch. I need 12v and a ground for up and the same backwards for down. Driver window works fine.
the12volt 
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Posted: March 16, 2017 at 6:16 PM / IP Logged Link to Post Post Reply Quote the12volt
Assuming you've checked each of the connections at each switch that operates the passenger window is properly connected, use a meter on each lead of those switches to verify it has 12V+, ground, and is supplying power and ground to the window motor leads, then go from there. It may be as simple as replacing a switch or you may have a break in one or more leads to the switch and/or window motor.
1988 chevy c2500, passenger window -- posted image. the12volt • Support the12volt.com
davep. 
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Posted: March 16, 2017 at 11:09 PM / IP Logged Link to Post Post Reply Quote davep.
It can be either driver's or passenger side switch causing the passenger side not to work.
The passenger side switch has 5 wires on it. One is B+, two to the motor, and two to the Drivers switch. Both of these wires rest at ground through the Driver's switch. The passenger switch applies B+ to either motor wire, and the other motor wire is grounded at the Driver switch.
So if you have B+ (checked to chassis ground on each motor lead from the passenger switch, check that there is continuity (from orn/blk wire on passenger switch)to each wire going to Driver switch.

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