2013 Rear Windshield Pump No Power

[Colorado Hoe]

Just purchased a 2013. Everything works except the rear windshield washer motor. Checked fuse, swapped with known good fuse, replaced steering column stalk switch with a new one, removed rear washer pump and hooked up to battery and the motor works.

I've looked for, but haven't found a wiring schematic for the washer pump circuit to see if there are any related relays. Does anyone have any experience troubleshooting no power to the rear washer pump?

 

[14Tahoe]

Before you check power, have you checked the thin black washer fluid tube in the engine bay? It runs downs the drivers side to the back window and can frequently get disconnected.

 

[mikez71]

Looks like the relay is one of those mounted inside the main fusebox...
-IF- that's the culprit, I've only seen people replace the main fusebox so far..

 

[Joseph Garcia]

^^^^^x2^^^^^ Look for washer fluid dripping down onto the ground. This may not be the cause of your issue, but it fairly common.

I am assuming that you tested the connector to the rear washer motor to see if it has 12 volts, when someone pushes the rear washer button.

 

[Colorado Hoe]

Before you check power, have you checked the thin black washer fluid tube in the engine bay? It runs downs the drivers side to the back window and can frequently get disconnected.

Yes, I've checked the fluid line. Thanks.

 

[Joseph Garcia]

^^^^^x2^^^^^ Look for washer fluid dripping down onto the ground. This may not be the cause of your issue, but it fairly common.

I am assuming that you tested the connector to the rear washer motor to see if it has 12 volts, when someone pushes the rear washer button.

And do you get 12 volts to the connector to the rear washer, when someone pushes the rear washer button?

 

[Colorado Hoe]

And do you get 12 volts to the connector to the rear washer, when someone pushes the rear washer button?

No power to the rear washer pump when the switch is pushed. Switch has been replaced with a new switch.

 

[Joseph Garcia]

No power to the rear washer pump when the switch is pushed. Switch has been replaced with a new switch.

OK. Next try wiggling the wire that goes from the truck body to the rear door. Since that wire bundle is moved every time that the rear door is open, it get a lot of movement, which sometimes results in wire breakage.

EDIT: the above is wrong. Please ignore.

 

[Doubeleive]

OK. Nest try wiggling the wire that goes from the truck body to the rear door. Since that wire bundle is moved every time that the rear door is open, it get a lot of movement, which sometimes results in wire breakage.

The pump is not back there, it's in front on the washer fluid tank

 

[Doubeleive]

Just purchased a 2013. Everything works except the rear windshield washer motor. Checked fuse, swapped with known good fuse, replaced steering column stalk switch with a new one, removed rear washer pump and hooked up to battery and the motor works.

I've looked for, but haven't found a wiring schematic for the washer pump circuit to see if there are any related relays. Does anyone have any experience troubleshooting no power to the rear washer pump?

I would check at the fuse box to see if the fuse is good and to see if there is continuity between the switch and fuse and from fuse to pump.
should be a normally open circuit and constant ground.

 

[Joseph Garcia]

The pump is not back there, it's in front on the washer fluid tank

Yep, your right, the pump is in the front. My bad, and I SHOULD know (DUH), since I had to troubleshoot a leak in that area.