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Super Mechanic
Super Mechanic, Master technician
Category: Chevy
Satisfied Customers: 13107
Experience:  29 yrs. exp., ASE master, cert. in G.M. electrical, a/c, susspension, brakes, electronic steering
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04 chevy tahoe 5.3l 4wd wipers will only work on high, no slow

Customer Question

04 chevy tahoe 5.3l 4wd wipers will only work on high, no slow speed, no intermittent. already checked fuses, any ideas
Submitted: 2 years ago.
Category: Chevy
Expert:  Super Mechanic replied 2 years ago.

Hello and welcome, Super mechanic here. I will do my best to help you with your question.

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****You have the hit happy face or a high rating for me to get paid for the answer.*****

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If you need any more on it just let me know. Thanks

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About your vehicle.

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That could very well be the wiper switch but there is no way for me (or anyone) to know without some testing.

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Being that we are not sure as to what the customers want to accomplish by asking a question, do you plan to check it or repair it yourself?

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Customer: replied 2 years ago.
yes we are going to repair it, just wondering if there was a relay somewhere or something like that. on some vehicles there is a low and then a high speed relay
Expert:  Super Mechanic replied 2 years ago.
That is actually built into the wiper module, (on the wiper motor) but let me post these tests for that concern.

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WIPERS INOPERATIVE - ONE OR MORE MODES

TEST DESCRIPTION



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The numbers below refer to the step numbers on the diagnostic table.
  1. This step tests for continuity through the 390 ohm resistor in the windshield wiper/washer switch.
  2. This step tests for continuity through the delay resistors in the windshield wiper/washer switch. The measured resistance will change in sequence from low to high as the delay speed is increased.










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