02 yukon rear wiper

[rescuemike]

I was wondering if anyone could give me some insight? I have an 02 yukon and the rear wiper doesn't work, I have replaced the wiper motor but still nothing, there is power getting to the motor but I had heard that there is a wiring harness that runs from under the vehicle up to the rear door and that this can get corroded underneath.

Anyone have any suggestions or can point me in the right direction to find a solution??

Thanks Mike