The most common cause is a broken wire between the driver's door hinges but there is likely a Body Computer involved with the power windows too. If the window works intermittently when you open and close the driver's door, then for sure it's a broken wire.
For the sluggish driver's window, spray the front and rear rubber channels liberally with Silicone Spray Lube. It goes on like water, evaporates, and leaves a bunch of "slippery" behind.
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Tuesday, July 5th, 2011 AT 7:05 PM