How do I replace the rear wiper control arm on a 2013 buick enclave

SOURCE: How to remove rear wiper arm

Remove the nut holding the arm. Should be able to lift up on the arm and loosen the joint at the motor.

SOURCE: How do I replace the rear wiper arm on a 2008 Kia Sedona

Your wiper arm has an interference fit which means it is essentially pressed on. The best way to remove it is to buy a wiper arm puller, which will have two arms that fit underneath the arm and a bolt that will push on the wiper post, they are pretty slick it should pop right off. Any auto parts store should be able to furnish you with the tool. If you're not going to use it alot, you might call your dealership (or friend with lots of tools) and see if they will pop it off for you.

SOURCE: Can't remove rear wiper to replace on 96 caravan

Lift wiper arm from rear window. then release latch that holds the blade to the wiper arm.( It's small tab)

SOURCE: replace the rear wiper arm shaft

There is a plastic cover that pops off at the pivot end of the wiper arm. pulling up on this with a hook of some kind from the furthest end should release it. Under it you will find a nut that holds the wiper arm to the shaft. It's quite common for the nut to come loose and the shaft spins without moving the arm. Try tightening this nut (with the ignition on, be sure the wiper motor is off, then turn off ignition and put the wiper arm in the parked position). This is a common problem if you've ever tried to turn on the wiper when it was frozen to the glass.

SOURCE: replace rear wiper arm

there is a cover at the base lift it up and then you have a nut. 10mm remove this and pull off the arm. sometime they get stuck and you will have to pry it up.