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'99 1500 OBS -- wiper/fluid motor relay out

SierraClassic

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SierraClassic Enthusiast

SierraClassic

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Posted

Hello All,

I'm looking for some quick advice on a minor problem with my '99 Sierra Classic 1500. The wiper motor and fluid pump have stopped working, but I can hear a faint grinding sound from behind the dash. I figure it must be a relay gone bad. Any tips or advice on where exactly it can be found and replaced would be appreciated.

 

Thanks in advance,

Stephen

bobcat5544 Enthusiast

bobcat5544

Posted
Posted
Hello All,

I'm looking for some quick advice on a minor problem with my '99 Sierra Classic 1500.  The wiper motor and fluid pump have stopped working, but I can hear a faint grinding sound from behind the dash.  I figure it must be a relay gone bad.  Any tips or advice on where exactly it can be found and replaced would be appreciated.

 

Thanks in advance,

Stephen

 

 

 

 

To start off relays don't make a grind sound they only click.

Second the wiper/washer system does not have a relay in the circuit.

The grind sound you hear is problem the wiper motor/module located under the hood on the drivers side fire wall to the left of the brake booster. Have someone hit with wiper switch and see if you hear a grind sound from it.

Also when that unit goes out it won’t let the washer pump work. It a safety features.

  • 1 month later...
SierraClassic Enthusiast

SierraClassic

Posted
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Posted

bobcabobcat5544,

After my last post the wipers started working, but have been intermittent again lately. They sound exactly as you described: grinding sound. The last time this happened I tapped on the wiper motor/module with the switch on and they started working. Time for a new module?

 

Thanks,

Stephen

 

The grind sound you hear is problem the wiper motor/module located under the hood on the drivers side fire wall to the left of the brake booster. Have someone hit with wiper switch and see if you hear a grind sound from it.

Also when that unit goes out it won’t let the washer pump work. It a safety features.

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