Hi, I'm having issues with the wiper & washer switch on my truck (C2500), 88,000. miles. Would the column switch be the first item to suspect without performing any electrical tests or would there be components in the wiper motor assembly that could be problematic ? Sometimes the wipers & washer won't function at all, sometimes the wipers stop in mid-cycle & sometimes the speed is steady / constant when set in the slowest intermittant position. At times when the wipers are stuck I can tap on the wiper motor housing & the wipers will start...Thanks, Bill

Hi roberto ismael luna, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
what country,? (the vary by....this)
those parts swaps are they OEM new or used.?
that failure is called auto park.
traditionally that is only function of the
whole wiper assembly (not motor neat) as the assembly casing has switches, to do that.
it is a safety issues. to the wipers do not stick and block your view down the road.
sure the list of possibles.
1: control arm ,mostly no. (wiper)
2: wiper, whole assembly , not just motor.
3; fuses
4: relays
5: bad wiring.
6: controllers, BCM etc?

I say #2 is bad and exactly this part black at blue arrow, CAM box
the motor is not bad ,the switch cam, does AUTO PARK.
use only NEW parts. not pulls or salvage , or Pro grade Refurbs
for CARDONE 1

My database only shows one wiper motor. Did you check voltage and ground, anywhere? Check the wiper fuse for voltage, hot all the time, use test light. At the wiper motor, dark green wire is voltage for lo speed. The purple wire is voltage for hi speed, Turn on key, turn on wiper switch, probe those two wires for voltage, use a test light. That bottom black wire off wiper motor, in diagram, is ground, check that also. If good voltage and ground with no wiper action, I suspect the wiper motor. There are codes for wiper, manufacturer codes, check for codes. good luck

Obtain a scan tool with bi-directional control capability. Monitor functions and input/output from General Electric Module (GEM or Body Control Module). I would suspect usually the wiper motor itself (control board internal to the wiper motor) or the multi-function switch on the steering column.

wipers and washer should be on the same fuse
could be the switch

the wiper or convenient module has issues--may want to get car scanned

I suspect a bad multi function switch located in the left hand side of the steering column. This switch controls your high/low beams/wiper delay/windshield washer/turn signals and hazards.

there is a short between the wiper switch and the motor look on the wire sending power to the motor when the switch is on

Go to www.autozone.com for the diagram. It's probably the whole works,wiper motor & washer pump. The switch hardly ever goes bad.

Sounds like a defective multiswitch on the steering column that is used to turn on wipers, washer, intermittent, etc. If you were only having problems with the washer, I might suspect the washer motor. But the fact that you are also having problems with the intermittent feature, I would suspect the multiswitch. If you can get access to the washer motor, you can test it by putting 12V to the connector to see if the pump will come on. Are your turn signals activated with the same switch as the wipers?

the little pump inside the washer fluid reservoir is bad, replace it