Windshield wipers will not turn off - 2003 Chevrolet Silverado

I had the exact same problem where my wipers would not turn off or run intermittently on my 2003 Chevy Silverado without having to pull the fuse for the wipers (that is scary when you have to open the drivers side door on a busy freeway to pull the fuse to turn off the wipers! YIPES!). I had a mechanic to replace the module located just above the wiper motor behind the three screws and it successfully resolved the problem. I first tried swapping out the switch on the steering column with no positive results; wipers still would not turn off.

Fixed the wiper problem which was identical to Brad's by changing out the wiper module which is also called a pulse module or something of that nature. Pretty easy fix. You have to remove the grill that the wiper blades protrudes from in order to get to the motor (4 clips in front which can be removed by hand, remove radio antenna, a center push down retainer, two plastic end caps which pop off and then 1 star type screw on each end under the end caps). Getting the blades off seemed difficult. I used a small puller to pop them off after removing the nuts.

You can't buy this module at a regular parts store. I had to get it from the dealer so be prepared to spend $130 to $140 for the part or go to the salvage yard. Works great now.

On the wiper motor under the hood is a control module. remove the three screws and replace the part. You can get the part at most parts stores.