Question about 1999 Chevrolet Blazer
Driver side power window won't go back up on 99 chevy blazer but all other windows go up and down just fine. All connections have been checked can you tell me why this may be happening?
Bad switch or motor
To check the motor the motor has two connections. One for up and one for down. Try hot wiring the connections to check. If it works the drivers switch is bad
Posted on Apr 30, 2010
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Posted on Jan 02, 2017
Is it making any noise at all when you push the button? If it is making noises, then you probably have a broken window regulator. If is is not doing ANYTHING, then you probably have a bad switch or a bad window motor.
You can find out which it is by popping the switch out of the door and checking for power and ground at the switch connector. (back-probe the connector with it still connected to the switch)
The circuits to the driver's door motor are Connector C2 - DARK BLUE Pin "A" and BROWN Pin "E" (C2 is the Long, 8-pin connector)
BOTH of these wires shouldbe GROUND when the switch is in the NEUTRAL position. Then with the ignition switch ON, the BROWN wire will switch from GROUND to POWER when the switch is pushed "DOWN". The DARK BLUE wire will do the same when the switch is pushed "UP".
If these are not doing as described, replace the switch. If they are switching properly, then you need to check for power and ground at the motor connector. - chances are it needs a motor, but you need to check the power and ground just to make sure you do not have a broken wire between the switch and the motor.
Posted on Sep 21, 2011
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