Most windshield wiper arms usually fail due to a loose nut or rusted and
worn out parts. Fixing this depends on how the wiper arm attaches to
the vehicle. Fixing wiper arm failure is usually as easy as tightening
a nut or replacing a worn out or rusted part.
Here is a step by step guide on fixing this issue.
Mark the existing wiper position on the windshield using a crayon. This
will help you align the wiper arm correctly when you install a new one.
Alternatively you can use the Trucks
own markings. At the bottom center of the windshield you will see
writing and three small dots. The wiper should rest on top of these
Follow the wiper arm down to where it connects with the Truck. You should find a hinged cap at the end.
Lift this cap to reveal the nut and screw underneath.
Use a wrench (or socket and ratchet) to loosen the nut.
Remove the nut completely, leaving the screw stud exposed and the wiper arm free to be removed.
Lift the arm straight up. Wiggle the arm and pull upwards at the same
time until the arm slides free of the screw. If it seems stuck, push
the arm back down and proceed to Step 7.
Use a battery cable puller to pry the arm loose. Arrange so the large
puller screw cap sits on top of the wiper arm screw. The outside arms have flat fingers that should be fitted underneath the
Grasp the handle at the top of the puller and turn clockwise. The
puller screw will push down on the wiper arm screw and simultaneously
pull up on the wiper arm. A few slow turns should pop the wiper arm