Question about 2001 Chevrolet Tahoe

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My rear defrost and wiper is not working - 2001 Chevrolet Tahoe

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  • diffra Jan 30, 2009

    I have the same problem on a 2000 Tahoe. Did you get any suggestions or did you find a fix?

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I have the solution. [will use untechnical verbage in this reply] Bad ground is the culprit. Both devices (defrost and wiper motor) appear to share a common ground which has become disfunctional. So, I took a piece of vinyl covered wire stripped each end and secured one end under the hex head screw (like a bolt) that secures the wiper motor to the metal bracket it is attached to. Then sucured the other end under the hex head screw that holds the door window latch mechanism to the liftgate. The wire is about 6 inches long. Bingo! Both work and have been working and tested every day for 6 days.

The smashed wire idea is along these lines. But realize in the troubleshooting of this - these devices have two different switches so power unlikely the problem because two circuits failing together is unlikely. So what can fail at same time? - the ground side of the circuit. Often time devices share a common ground bus or grounding circuit.

Anyway. This fixed it! Thanks to those who read my questioned and took the time to read it. I may add a picture of the wire solution this weekend.

Posted on Feb 05, 2009

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I had the same problem. Found bad connection where harness from hatch plugs into body-upper right corner of hatch. Mine appeared to be from high resistance in the connection on the ground and 12 Volt feed. Connector was burnt and a lot of corrosion. I had the same problem at the connector under the drivers seat that caused the adjuster and seat warmers to stop working. I love my 2004 Suburban, but seems that these connectors are junk since I have had this problem on two different connections. By the way, the Chevy dealer had my vehicle on 2 occasions for the seat problem and could not diagnose the problem. They were looking at reprogramming controllers and the such. I am an electrical engineer with years of field experience which, with the help of my trusty old Fluke meter, led me to the high resistance. You can simply take an ohm reading between the hatch and the body. It should be in the 1-2 ohm range with no fluctuations. I was reading around 100 ohms and it would fluctuate while moving the hatch up and down, indicating that the only ground present was in the hinges, not the actual electrical connection.

I hope this helps!! I shared the seat part because I would guess that many electrical problems are the result of these crappy connectors. I solved the problem by soldering a piece of 14 MTW wire parallel around the connector.

Posted on Feb 14, 2009

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  • Chevrolet Master
  • 22,041 Answers

Try looking at the wires in the rear tailgate,where they leave the car body in a rubber shroud and enter the tailgate ,you might find a crushed wire here ?? 90% chance

Posted on Feb 05, 2009

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SOURCE: rear windshield wiper works...somtimes?

I have a 2004 suburban that had wiper/defroster problems. I would check the connector between the hatch and the body. It is located at the top right corner. The plug is under the rubber boot where it enters the body. Mine had lost connection due to corrosion and needed to have a jumper wire placed around the connector for the power and ground wires. Give it a look and see if that is the problem.

Posted on Feb 25, 2009

19ken55
  • 426 Answers

SOURCE: rear Defrost, rear wiper and

Check the fuses.
Check the ground wire to the hatch from the car body.

Posted on Jan 23, 2011

6ya6ya
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Posted on Jan 02, 2017

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