07 H3 Burns to the ground!

[HUMMERDAD]

I dont post much here but I figured this story needs to be shared.This comes from another group and I am just helping to spread the word as this is a H3 spific issue. The blower motor wire harness that's been under recall since June of 2015 was the cause of what you see here. The indivual had his duaghter with him all are ok and got out safe. So if you haven't checked lately you might want just want to let get the word out there so this doesn't have to happen to anyone else.

 

[3Hummers]

Wow. Glad everyone is safe. Pretty sure that won't buff out. Scratch one H3. Wonder if this will help speedup the repairs under the recall?

 

[Bigunit]

Holy moly! Glad everyone is OK. I also hope they have a good products liability plaintiff's attorney. They would appear to have a case with "good facts"...just sayin'

 

[High Five H2]

holy crap. any warning signs that the harness was about to start burning?

 

[Ryan212]

Glad everybody is safe. That is a ton of damage for an interior started fire

Ryan

 

[SuperBuickGuy]

what irritates is GM has had this as an open recall but still hasn't had parts.... That's fine, I'm not a good ambulance chasing attorney - I'm the worst SOB you ever want the displeasure of meeting in court.

 

[Clwnshu99]

I replaced my harness maybe a month before the recall was released, it was melted to the relay and shorted out causing the wires to all melt together. I've been using my blower only on speeds 1 and 2, because I thought I read that somewhere for the meantime, however, I looked yesterday and couldn't dig up where I read it. So this morning(pretty brisk out) I clicked it up to 3 for about 5 minutes....after this picture, I wont be doing that anymore, at least not until the permanent fix is released.

 

[rsc]

I replaced my harness maybe a month before the recall was released, it was melted to the relay and shorted out causing the wires to all melt together. I've been using my blower only on speeds 1 and 2, because I thought I read that somewhere for the meantime, however, I looked yesterday and couldn't dig up where I read it. So this morning(pretty brisk out) I clicked it up to 3 for about 5 minutes....after this picture, I wont be doing that anymore, at least not until the permanent fix is released.

My understanding is that level 4 is straight through voltage, not stepped down. Level 1 would be the most stepped down voltage and most heat.

 

[SedonaBound]

That's dramatic! Does anyone have a picture of a burned resistor that they can post so we we know where and what to look for the faulty resistor?

 

[08H3]

I asked this once before, but didn't get an answer so I'll ask again. How is this issue different from all the other millions of junk blower resistors that GM has produced over the years? Melted blower resistors are nothing new. I'm on #3 in my truck.

 

[rsc]

I wish I knew what the difference is. I know that some other vehicles have a setup that approaches the fan speed control from the opposite view. Instead of stepping down DC voltage through a regulator, AC voltage is generated and used to control the motor speed. The DC system is simpler, but the AC system is more efficient. Here's an explanation of our system, note that level 4 is straight through voltage with no heat generated from resistors.

http://www.samarins.com/glossary/blower-motor-resistor.html

 

[Sennin]

will this affect the south african build H3? i need more info whom can help with what to look out for

 

[bendyprissy]

We just spoke with GM/chevy the other day, thinking we had missed the notice of the new part in, since it had been so long since the recall was issued. They said GM has not come up with a good enough fix yet for the issue. The service dept said the wiring harness needs thicker wires and that replacing it with a new one now, of the same type, is futile. He had no idea how long it would be.

 

[bendyprissy]

My AC/heat will only work on 1 or 2, and even 2 cuts out occassionally. We replaced the wiring harness right before the recall was issued thinking that would solve the problem. It is the same as before. I have to keep a ski jacket, pants, and gloves in my car in case it goes out completely when driving. :gaah:

I replaced my harness maybe a month before the recall was released, it was melted to the relay and shorted out causing the wires to all melt together. I've been using my blower only on speeds 1 and 2, because I thought I read that somewhere for the meantime, however, I looked yesterday and couldn't dig up where I read it. So this morning(pretty brisk out) I clicked it up to 3 for about 5 minutes....after this picture, I wont be doing that anymore, at least not until the permanent fix is released.

 

[08H3]

My AC/heat will only work on 1 or 2, and even 2 cuts out occassionally. We replaced the wiring harness right before the recall was issued thinking that would solve the problem. It is the same as before. I have to keep a ski jacket, pants, and gloves in my car in case it goes out completely when driving. :gaah:

Assuming this is the same as the issues I've had before (and it may not be), rarely can you replace only the harness or the resistor. If one fries, it usually takes the other out with it.