My windshield washers do not work on my 2006 Dodge Caravan SXT. No fuse in front/rear washer slot but worked before. Slot has no prongs in it. There is no humming sound when washer button is pressed. Both front/rear wipers are working.

SOURCE: washer pump will not work on 2002 caravan

If you have check every thing else, then it is the Windshield Washer Pump that you have to check. The washer pump is located through the front passenger side wheel well. The last time I change it the price was about $12.00 for the pump.
Take it apart and test the connection, to make sure there is power to the Pump. If there e is no power the there is an electrical problem else where.
Track it down and try fix it and try again.
If there is power and the pump do not work then go head and change it.

SOURCE: 1999 dodge caravan intermittent instrument cluster

This Seems Indicative Of a Poor Connection AT The CLUSTER Or A Junction Connecter Close to the Cluster. This is Assuming you Have Ruled OUT ALL ABS COMPONENTS, LOOK at These VERY CLOSLY Because of the Small Volts These Wires Carry , the SMALLEST DEFECT WILL Cause this Type of Symptom that you have given. Please try all of the Above, I feel Confedint that athis is where your Problem Is.

SOURCE: Rear window washer not working.

it could a blockage at the spayer outside .take a safety pin and poke in the small hole outside.
to check the button remove,it from the dash take a
12volt tester check to make sure you have poweon one side