Rear Defroster Burnt Wire Fix Write Up - Page 19 - Chevy Impala Forums
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post #271 of (permalink) Old 02-10-2016, 05:27 PM
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& here is the picture. Thanks again

https://app.box.com/s/pmlc7e9j1s5aldlm437mjlqugozctjgw

Last edited by Mwcotthoff; 02-10-2016 at 05:29 PM. Reason: correction
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post #272 of (permalink) Old 02-12-2016, 06:23 AM
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What gauge wire you using? I had an issue with mine originally. Make sure you using thick enough wiring.


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post #273 of (permalink) Old 02-12-2016, 08:55 AM
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16 originally. I re wired with 12 and still not working. Fuse is fine. Have order d a new relay. Going to 2x check the wiring later.
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post #274 of (permalink) Old 02-12-2016, 11:42 AM
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Use a volt meter to check for power to the broken wire.


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Yeah I got a few mods.......
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post #275 of (permalink) Old 02-13-2016, 05:20 AM
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Did you solder the wires together or just twist them and wrap in electrical tape ?

Some things are better left unsaid, which I generally realize right after I have said them.
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post #276 of (permalink) Old 02-13-2016, 09:34 AM
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Think I have solved problem. I used butt connectors and 12g wire. Power is running to back. The old connectors I used were causing resistance. When I used the 16g the wires were warm to touch. I'm not feeling that here.

Last edited by Mwcotthoff; 02-13-2016 at 09:36 AM. Reason: Correction
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post #277 of (permalink) Old 03-13-2016, 05:35 AM
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Did this fix and for some reason my check engine light is staying on now. Car is running fine, never had this light on before...because it's on my remote start won't work. 2013 Impala
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post #278 of (permalink) Old 03-13-2016, 05:37 AM
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Was your defroster not working before and is working now after the fix?

Will need to get the code read to see what code you have... That will help a lot.

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post #279 of (permalink) Old 03-15-2016, 07:15 PM
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I'm guessing maybe you cut the wrong wire or maybe didn't plug the harness in all the way. Did you turn the car on with the harness unplugged? That will throw a code until it is cleared, ask me how I know because I did it haha.


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post #280 of (permalink) Old 08-28-2016, 04:35 PM
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Thumbs up Another happy reader.

Thanks for your post. I just did the repair on my 2011 Impala.
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post #281 of (permalink) Old 12-10-2016, 06:21 PM
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Anyone know if the left front impact sensor wiring for the the airbags runs thru this connector? B0085 - 5 Short to Voltage code and wondering where to start. Already replaced the left front impact sensor, swapped the left with right after the replacement didn't solve the issue after I'd had the dealer diaghnose the code originally. Went back and told them apparently they don't know how to diagnose and was glad I didn't have them fix it otherwise I probably would've got hosed over.
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post #282 of (permalink) Old 12-26-2016, 10:19 AM
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Quote:
Originally Posted by KG2014 View Post
Did you turn the car on with the harness unplugged? That will throw a code until it is cleared, ask me how I know because I did it haha.


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Me too. Listened to the radio when I had the 2 harnesses unplugged. Threw 3 codes afterwards. P0449, P0452, & P0463. I also tried to turn the ignition off when the harnesses were off. It wouldn't turn back to the off position so I couldn't remove the key. Scared the heck out of me. Ignition worked fine after I plugged the harnesses back in. I then reset the codes. Fingers crossed.

I do have a question though. Before doing the fix, I had no power the the rear windshield defroster contacts. After the fix, I get power to the passenger side contact but not the drivers side contact. Is that normal? It is too warm today to check the defroster properly. Its the main reason it got fixed today!

Thanks. Props to the OP for the great write up and others for their helpful contributions.

BTW - Burned up connector like everyone else. 2013 Impala LT. I just butt spliced the purple and black wire using some extra 14 gauge wire I had laying around. I did not use a fuse. (Yes, I read all 19 pages of this thread)
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post #283 of (permalink) Old 12-26-2016, 10:28 AM
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Power at only one side of the grid means the grid has a break.

I know you can buy a paint made for reconnecting the grid, although I have not done this.

I believe it works like a bottle of fingernail polish, and you clean the area and paint line between areas around the break, the paint being electrically conductive.

Having a multimeter tester for checking for resistance/continuity is a big help in finding the problem(s) and then verifying your fix(s).

There are several vids on YouTube.

https://youtu.be/u_v942ySQHA
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post #284 of (permalink) Old 12-26-2016, 11:46 AM
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Quote:
Originally Posted by Carbide View Post
Power at only one side of the grid means the grid has a break.

I know you can buy a paint made for reconnecting the grid, although I have not done this.

I believe it works like a bottle of fingernail polish, and you clean the area and paint line between areas around the break, the paint being electrically conductive.

Having a multimeter tester for checking for resistance/continuity is a big help in finding the problem(s) and then verifying your fix(s).

There are several vids on YouTube.

https://youtu.be/u_v942ySQHA
Thanks Carbide. I checked the continuity from the rear passenger side grid connector to the rear driver side grid connector and also several spots throughout the grid. Everything checked out good. I think I wasn't testing the power output correctly. Before, I connected the black ground wire of my multitester to a vehicle ground near the inside of the door then touched the red wire of the tester to each of the grid connectors, one at a time. This was with the rear defroster turned on. When I touched the passenger side connector, I got a little over 10 volts. When I touched the driver side connector, I got nothing.
Your post made me go out to the car and try the continuity test. Once I determined that the grid was good, I used the multimeter again. This time I touched the red wire to the passenger side connector and the black wire to the driver side connector and got over 13 volts. I think everything is working as it should. I'll know for sure when it gets colder. Thanks again for your help.
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post #285 of (permalink) Old 02-22-2017, 03:14 AM
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Smile Accurate Information

followed the step by step and found the problem- pictures and description very accurate. Job took 15 minutes and now working.
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