2000 gmc jimmy rear window wiper

Rear Wiper/Washer System Components
The rear wiper/washer system consists of the following components:
• Rear wiper/washer switch
• Window wiper module-rear
• Window washer pump-rear
• RR WIPER 15A fuse
• RR WPRB 25A fuse
Rear Wiper/Washer System Operation
The rear wiper module controls rear wiper motor operation. Battery voltage supplied to the module is used to operate the wiper motor in all modes and to return the rear wiper arm to the park position after the ignition is turned off. Accessory voltage supplied to the rear wiper/washer switch is used to supply the rear window wiper and washer switch signal circuits. In wiper switch positions 1 and 2 the wiper switch signal circuit voltage level to the wiper motor module determines the wiper motor delay interval. The rear window washer pump supply voltage circuit is used to provide the operating voltage for the rear washer pump for as long as the rear washer switch is pressed. The rear window washer switch signal circuit is used as a wash signal to the rear wiper motor module to operate the wipers during the rear wash operation.


Did you replace the rear wiper module ?

Electronic board inside the wiper motor is burnt or it needs the ground wires cleaned

you most likely have a rear wiper ? there is a problem with the motor or the linkage take the rear hatch interior panel off and you should be able to see the problem

its part of combination switch need to remove steering column cover to get switch off

I had the same problem. I thought it was an issue with a blown fuse, but also noticed that the rear wiper was very stiff.
I solved it by opening the rear window (so the wiper is not clicked into the motor) then squirt some WD40 into the wiper mechanism (I put the oil in from the outside). Gently move the wiper from side to side until it starts to free up - after a couple of movements the wiper should be moving freely again. No issues since.

At the same time, check that the washer jet is correctly angled. Mine was squirting directly into the wiper which may have caused it to rust up a bit.

If you remove the rectangular plastic cover off your windshield wiper motor, you will find a circuit board. Take it out and throw it away, and get a new one. I had to do that to mine this past winter. My buddy, after taking his truck to GM and giving them 300 bucks, got me to change his, and the problem was gone. The board is 20 or 30 dollars.

the wiper motor is connected to a actuating then to the wiper and one of the them has come undone. To remove pop back hatch look at outside edge for small screws if none are seen place large screwdriver between kick planel and metal and gentle pull and remove from vehicle exposing motor. If clip break you can get most from local parts stores later

new one ,sounds like gears stripped

If you can wiggle the arm for at least 45 degrees or  in full motion meaning you have a problem mechanically, rear wiper has self locking when OFF and it shouldn't move. Open the inner panel and check the motor assembly for any abnormalities.
Good luck.

pry it up GENTLY with a screwdriver. DO NOT use the windshield as leverage