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Rear Defroster Dilemma
10mikeymike
Member Posts: 8
I have a 07 Yukon Denali which I purchased new in June of 07. This Winter I 've had to take it back to the dealer 5 times for problems with my rear defroster. The problem began when the soldered connection at the window broke off on the drivers side. I took it back and they re-soldered the connector. A week or so later, it came off again. After another trip to the dealer, they re-soldered it again. Two weeks later it came off again. This time the dealer ordered a new rear window and sent the vehicle to a local glass shop to have it replaced. Within a few weeks it came off again. I took it back and they re-solderd the connector. This morning, I noticed the connector has come off on the passenger side. I can't figure out what 's causing this to happen. Each time I've had the vehicle in, I notice someone stretches the coiled connector wires as if to relieve tension. While I understand the logic, this really isn't the problem since they would only become trensioned if I were opening the window and not the entire tailgate. Since I only open the tailgate and never the window, this can't be the cause. I use the remote start frequently since it's been a cold Winter and the vehicle is left outside. The only thing I can imagine is that when running remotely, there is too much current going to the rear defroster and that combined with the cold outside temperatures is causing the connections to get too hot and become un-soldered. Has anyone else experienced this? I'm really getting tired of taking it back to the dealer.
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Comments
Try to adjust the angle of the male terminal (where its soldered on to the base) to be a bit more steeper to the glass (make it closer to the glass - lesser degree from the base to the terminal), so there is less "bending" force on where its soldered to the base...
There are different types of solders (some with more/less lead content) as far as being able to handle the temp changes and the rate of current flow; but, I would assume the dealership would know the exact solder to use.... Besides, you had the entire rear glass with element and terminals replaced, so the type of solder used are all OEM so should not be the issue here. Good Luck!
Earlier I had a chance to try out my rear defrost and below are my observations:
1. My rear defrost does not come on automatically when I remote start my Denali, unless I leave it on when I turn-off my vehicle. Even when leave the the rear defrost ON, as I recall, it will turn itself off automatically after approximately 15 minutes or so (did not clock that)...
2. I ran my rear defrost for about 9 minutes or so, then I opened the rear glass and touched each terminals with my index finger, they were no where close to "hot". Each was only warm to touch and I was able keep my finger on the terminal with no problem...
I believe you are right to tell your dealer to look beyond the terminals, they need to make sure there is not a short circuit somewhere before attempting to solder the terminals back on again... Good Luck to you!!
I also own a 07 Denali with same issue. Were they ever able to fix your defroster or is it an on-going issue ? They re-placed my window and it has fallen off recently, brought it back they re-apllied it. Told them i will be back in a few weeks, I just know. Service told me that they were told not to replace anymore per Detroit that it was customer neglagence Tailgate used daily, window never used I'm afraid of wire falling off.
http://www.popularmechanics.com/automotive/how_to/4221212.html