SOURCE: 2003 Envoy Both the rear windshield wiper and defogger quit
Have you checked the wire harness that goes between the hatch and the body? The constant opening and closing weakens the wires. Could also be the ground wire, I believe is inside the hatch. It could have come undone. If you have an owners manual, it should guide you to the defogger fuse. Hope this helps. Best wishes.
SOURCE: my rear window defogger is not working. the
Some auto parts stores sell a adhesive that has copper in it. made by "Permatex" just for that problem. Ask the parts guy.
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SOURCE: The connection to my rear defogger broke at the
Hi:
Yes, you can do that. You will need a higher wattage soldering iron, and some solder flux too. remove the connection tab from the connecting wire, and just hold it in place with something small, not a pair of pliers , as they will sap the heat away from the soldering iron. Gently reconnect the wire when you are done!
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Liftgate module (LGM)/endgate module (EGM)
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Rear window defogger grid
Rear Window Defogger Operation (With LGM)
Battery positive voltage is supplied through the LGM 2 fuse to the LGM for the rear window defogger system. When the rear window defogger switch is depressed, the HVAC control module illuminates the rear window defogger indicator, and sends a class 2 message to the LGM to enable the rear window defogger. The LGM enables the rear window defogger by allowing battery positive voltage to the rear window defogger.
When the rear window defogger switch is pressed for the first time, the defogger cycle lasts 10 minutes. Further operation results in 10 minute defogger cycles.
DTC B0283 Electric Rear Defrost Circuit - do you know what DTC'S - diagnostic trouble code's are ?
Circuit Description
The liftgate module (LGM)/endgate module (EGM) monitors the voltage level on the supply voltage circuit of the rear window defogger. The LGM/EGM test the supply voltage circuit of the rear window defogger every 160 milliseconds. With the rear window defogger inactive, the supply voltage circuit of the rear window defogger will have no voltage present. With the rear window defogger active, the supply voltage circuit of the rear window defogger will be near system voltage.
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