MY 99 K2500 SUBURBAN WITH ONLY 66K MILES WONT ALWAYS ENGAGE THE WIPERS...I HEAR THE MOTOR GO WHEN USING THE SWITCH...BUT SOMETIMES I NEED TO KEEP THE WIPERS ON AND MAYBE 5 MINUTES LATER THEY WILL BEGIN WORKING...

OTHER TIMES, WHEN I TURNED ON THE LIGHTS THEY BEGAN WORKING...BUT NOT ALWAYS...I AM HEARING THE BUZZ SOUND FROM THE MOTOR...ALSO, WHEN THE WIPERS ARE NOT WORKING, NEITHER WILL THE WASHER FLUID SHOOT....

I AM HOPING IT MAY JUST BE THE WIPER MOTOR...THE TIME DELAY WEARING OUT, AND NOT INSIDE THE COLUMN

 

I'd say since you hear the motor, it is probably either that or the attaching gear drive is stripped.

 

How tough is it to pull that out?