How to Change a GM Manual Window Regulator
General Motors vehicles use a window regulator for raising and lowering the pane of glass inside a door. This regulator is a mechanical lever that is actuated by a hand crank inside the car or truck, which can wear out or become damaged, requiring replacement. The average backyard mechanic can replace a window regulator in about an hour.
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Instructions
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1
Disconnect the battery by turning the positive terminal bolt in a counterclockwise direction, then pulling the terminal free. Place the terminal away from metal.
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2
Remove the interior door panel by turning the inside door handle mount screw counterclockwise, turning the window handle crank screw counterclockwise, then pulling the panel free of the pop rivets that hold it to the metal. Some models could have bolts in the interior arm rest that must also be turned counterclockwise and removed. The plastic pop rivets can harden with age and may require replacement.
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3
Remove the glass retainer bolts by turning them counterclockwise, then pull the glass up and out of the door. Some models will have end clips that hold the glass to the regulator; pry them free with the screwdriver and remove the glass.
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4
Remove the window regulator mount bolts by turning them counterclockwise; then pull the regulator free from the door metal.
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5
Replace the regulator with a new unit by positioning it into the door and securing the mount bolts in a clockwise direction. Restore the glass to its position in the regulator, then secure its clamps or retainer bolts. The regulator and the glass are designed to fit without adjustment in most models, but some manipulation may be required to seat them correctly.
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6
Replace the door panel by pressing it firmly to engage the pop rivets into their holes. When the door is secure, turn the bolts in the arm rest, the screw in the crank and the screw in the door handle clockwise until they are all tight.
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7
Replace the positive terminal and secure its bolt by turning it in a clockwise direction.
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Tips & Warnings
Clean the glass completely while it is out of the regulator.
Use caution when working with automotive glass.
