Question about 1987 Chevrolet Blazer
I have a 1987 K5 (Silverado) Blazer, and I can't get the rear electric window to budge, whether with the dashboard switch or the key switch. The window has moved slowly for a number of years. Since the window won't open, neither will the door, and the only access is through the rear door cover plate (AFTER you climb in the back!). Not sure where to go with this.....
Sounds like you have a wiring issue going on with one thing and the other has to do with the door itself
Posted on Feb 07, 2009
Remove the cover plate and try hooking up a 9 volt battery (yes the standard square household battery) directly to the wires coming from the electric window motor. Hooking up the wires one way will lower and the opposite way will raise the glass. If that doesn't work you'll have to replace the motor or whole regulator unit. If it does work then use a voltmeter to find out how many volts are reaching the switch. As a vehicle gets older wires get worn (insulation comes off easily and small wire strands break were there's flexing or pulling) and grounds become loose or corroded. Check and clean all the grounds you can see (rusty door and hinge could cause a lack of grounding so clean around hinges and the PW regulator bolts) and replace the wire from the dashboard switch to the window and you could add a flexible ground strap from window regulator through the bottom of the door to the frame.
Posted on Feb 07, 2009
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Posted on Jan 02, 2017
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