Anyone else break their transfer case?

[Mike E]

Went off roading with my Hummer club today and broke my transfer case. Wasn't doing anything extrememe (I'll post pics tomorrow) and I heard the snap! Barely made it home in 4high lock since thats the only position it would move in.

Has anyone else had this happen? did your dealer cover it under warranty? My friends in the club told me that its covered and not a problem.

Just wondering. I have a puddle of oil forming in my driveway! Man can you hear that chain grinding the case!

I am happy to say that the H3 performed WAY above what I expected and a couple of the guys with Alpha's were surprised as well. IT was a fun day!

[Hummer Guy]

wow...that sucks -- what exactly were you doing when you heard the snap? (Speed, t-case setting, obstacle, etc)

[Mike E]

I was going through a twist ditch or a Whoop dee as some call it and was climbing out and i heard the pop. Nothing extreme at all. About the same as the demo you would watch on the Hummer site for the H3.

[rkcrawl]

I am going to be real interested in hearing what failed in your case and how its handled by the dealer.

[Hummer23]

I am going to be real interested in hearing what failed in your case and how its handled by the dealer.

+1

[f5fstop]

Under warranty, the dealer should repair or replace. Those are pretty good BW transfer cases, but like anything else man made, some will slip through quality control.

What is the build date on your H3? I'm curious...

[H3 Hummer]

Under warranty, the dealer should repair or replace. Those are pretty good BW transfer cases, but like anything else man made, some will slip through quality control.

What is the build date on your H3? I'm curious...


Yeah, I wonder if it was June.

[Mike E]

f5fstop, I replied to your Pm with my VIN so you can check it out. Let me know.

[NoMoGMPG]

If you could drive in 4hiLock, I don't think its the t/case. Probably a diff.

[f5fstop]

Could be a couple things, such as lockup shift collar, high/low shift fork, shift cam, that could lock it in 4-wheel hi/low and allow the vehicle to be driven, with a lot of noise.

[FutureBeachBum]

How do you determine the build date of your H3?

[Mike E]

Dealer just called. They said the entire front differential suffered a catastrophic failure to which it basically exploded. Which would explain the fluid spraying everywhere. They also said that the transfer case was leaking and they would reseal it. I should have it back tomorrow. He said the techs have never seen a differential this bad.

All being covered under warranty.

[f5fstop]

Oops, another front diff; this is not good. That makes three on this forum alone. Strange, yours was made in August too. Makes me glad I have one of the first ones made.:D

Did the dealer get some photos? Was it a ring gear failure like Neo's and Bebe's? I wonder if AAM was having some problems back July; such as hardening of the gear set? Just wondering, but could lapping compound left on the gear set cause this type of ring gear failure? Anyone know? They did have that early problem with the rear axles and lapping compound left on the gear set during assembly. Just thinking to myself, I have no info on this, but I'm getting more curious as time goes on.

[Mike E]

I'll call the dealer in the morning and see if I can get more info/pictures to post.

[NEOCON1]

this is the first i have heard of one leaking after failing . do you know if it was more than a striped ring gear .

[CO Hummer]

Dang........ There's a lot of this going around in H3 land. :eek:

[HummBebe]

f5fstop,

don't forget HIHUMMER andSewie too. This makes 5 .:D

[HIHUMMER]

f5fstop,

don't forget HIHUMMER andSewie too. This makes 5 .:D

Was it ever determined if we all had June 05 build dates!?!?:confused:

[NoMoGMPG]

Oops, another front diff; this is not good. That makes three on this forum alone. Strange, yours was made in August too. Makes me glad I have one of the first ones made.:D

Did the dealer get some photos? Was it a ring gear failure like Neo's and Bebe's? I wonder if AAM was having some problems back July; such as hardening of the gear set? Just wondering, but could lapping compound left on the gear set cause this type of ring gear failure? Anyone know? They did have that early problem with the rear axles and lapping compound left on the gear set during assembly. Just thinking to myself, I have no info on this, but I'm getting more curious as time goes on.

The lapping compound would not cause a fracturing of the gear, rather, it would lead to excessive backlash and a howling noise. The catastrophic failure is likely a manufacturing defect and American Axle is going to have alot of 'splainin to do, not to mention compensation to GM for warranty repairs.

[Sewie]

I never did get to see the actual damage to mine. But from the sounds of it, it wasn't nearly as bad. Just some small chips in the teeth from what I was told. I was actually able to drive it for about a week before I took it in. There was just a grinding noise whenever I let off the gas.

They originally noticed some wear on the t-case and rebuilt it. Then once it was put back together they noticed the front diff. Not sure if its all related. :confused:

And I purchased mine in early July '05 so it was probably a June build.

[HummerNewbie]

And I purchased mine in early July '05 so it was probably a June build.

As long as they had this issue fixed by the time mine was built :D

[Sewie]

As long as they had this issue fixed by the time mine was built :D

Good thing you waited so long, huh? ;)

[HummerNewbie]

Good thing you waited so long, huh? ;)

LOL As they say, good things come to those who wait :D

[f5fstop]

The lapping compound would not cause a fracturing of the gear, rather, it would lead to excessive backlash and a howling noise. The catastrophic failure is likely a manufacturing defect and American Axle is going to have alot of 'splainin to do, not to mention compensation to GM for warranty repairs.

Makes sense, but won't excessive backlash put more strain on the gear teeth? Not an expert in gears, unless they have electricity running through them.:D

[NoMoGMPG]

Makes sense, but won't excessive backlash put more strain on the gear teeth? Not an expert in gears, unless they have electricity running through them.:D

Technically yes, but it would make noise, and alot of it, long before it would sharpen the teeth to the point of fracture. Normal backlash is .005-.009", someone posted here that their's were measured at .022" with the lapping compound issue. But that brings an interesting variable as excessive backlash could break teeth under a heavy shock load, maybe I need to re-think my position. :confused:

[HummBebe]

Technically yes, but it would make noise, and alot of it, long before it would sharpen the teeth to the point of fracture. Normal backlash is .005-.009", someone posted here that their's were measured at .022" with the lapping compound issue. But that brings an interesting variable as excessive backlash could break teeth under a heavy shock load, maybe I need to re-think my position. :confused:

That was me, the tech at the Moab 4x4 outpost is the person who said my backlash was .022. He even said that was a huge issue regarding the failure.

Someone then asked how could he know that, another expert said he could have simply turned the gear to measure.

Lapping compound was not an issue in my case.

[f5fstop]

Technically yes, but it would make noise, and alot of it, long before it would sharpen the teeth to the point of fracture. Normal backlash is .005-.009", someone posted here that their's were measured at .022" with the lapping compound issue. But that brings an interesting variable as excessive backlash could break teeth under a heavy shock load, maybe I need to re-think my position. :confused:

You probably know more than I do in regard to this area; but I'm learning fast.

As for Bebe's her failure was not due to excessive backlash or lapping compound. The only real lapping compound problems I have heard of are the early rear axles, and not all were affected. And, as you state, the noise gets people in at around 3-4K.

[Hummie2]

Just curious do all of the failed front diffs. have the off-road package with the 4:1 T-Case?

:( This is starting to look like a housing flex problem. What happens is that the differential gear teeth are tapered and they try to spread the diff. case apart when subjected to a high torque load. When the case spreads the teeth are no longer in proper mesh at that point (the teeth make a high flank contact similar to being setup with excessive backlash). A high flank contact severly loads the tooth on the ring gear and causes it to break away from the base of the ring gear. The measured .022" backlash would be indicative of a housing that was severly loaded enough to stretch the housing beyond it's elastic limit. The housing was sprung and never returned to it's original shape ( similar to overspreading a Dana housing too far when installing a gearset. A housing can be easily ruined if somebody gets carried away with the case spreader as they should never be spread more than a few thousands of an inch to facilitate getting the carrier and bearings back into the housing).

BTW- the tech that actually took time to do "failure analysis" and measure the backlash before removing the gearset is a pretty good tech. Most would never have bothered to take the time to check.;)

[Mike E]

For what it's worth, mine does not have the adventure package.

[rkcrawl]

:( This is starting to look like a housing flex problem.

Interesting you bring this up, as case deflection is something I mentioned in my post in the other thread about the front diff grenading. I hope you are wrong otherwise we're going to see lots of these...

[HummBebe]

Just curious do all of the failed front diffs. have the off-road package with the 4:1 T-Case?

:( This is starting to look like a housing flex problem. What happens is that the differential gear teeth are tapered and they try to spread the diff. case apart when subjected to a high torque load. When the case spreads the teeth are no longer in proper mesh at that point (the teeth make a high flank contact similar to being setup with excessive backlash). A high flank contact severly loads the tooth on the ring gear and causes it to break away from the base of the ring gear. The measured .022" backlash would be indicative of a housing that was severly loaded enough to stretch the housing beyond it's elastic limit. The housing was sprung and never returned to it's original shape ( similar to overspreading a Dana housing too far when installing a gearset. A housing can be easily ruined if somebody gets carried away with the case spreader as they should never be spread more than a few thousands of an inch to facilitate getting the carrier and bearings back into the housing).

BTW- the tech that actually took time to do "failure analysis" and measure the backlash before removing the gearset is a pretty good tech. Most would never have bothered to take the time to check.;)

I think you (and rckrawl) are definitely on to something.....!

Questions:

If the flex causes the pinion gear to shear off ring gear teeth, then this would occur under extreme "Flex" conditions? With IFS???

If the case has been flexed, ring gear damaged, is the housing still useable???

Should I have the differential housing inspected? Replaced?

Would a housing made from a different material (H3's are aluminum) be more stable?

Is there any manufacturers who produce a Cast iron or some other type of Steel housing?

Regarding the tech, he was exceptional. The entire Crew at Moab 4x4 Outpost is exceptional.

Thanks!!!!

Bebe

[NEOCON1]

thats what they did for me i have a nice shiney completely new front diff :D

[HummBebe]

thats what they did for me i have a nice shiney completely new front diff :D
:mad::mad::mad::mad:

I should have called Hummer like you did. Next time, slap me if I don't...K?

[NEOCON1]

i might pinch you on the bottom , but I would never slap you :p well , i guess i could slap you on the bottom ;) :D

[NEOCON1]

I knew this had nothing to do with driver error. I hope GM reads the site and addresses the problem.

i should hope so Mr. Banzai driver ;) :D

[HummBebe]

i should hope so Mr. Banzai driver ;) :D

No....It's BAM BAM :D;)

[HummBebe]

Seriously though,

If this is the issue, I can see not having a recall, but for as much wheeling as I do, I want the fix....before it breaks again.

5 extra days in Moab, well it was fun, but I do not want to do it again.:mad:

[HummBebe]

I did drive home on time however :D;)

:p

[NEOCON1]

that really hurts :eek: :D

[Hummie2]

[quote=HummBebe]I think you (and rckrawl) are definitely on to something.....!

Questions:

If the flex causes the pinion gear to shear off ring gear teeth, then this would occur under extreme "Flex" conditions? With IFS???

Don't confuse suspension flex with housing flex (distorsion). The housing distorts out of shape from the torque load on it. You could do it on smooth level surface if could apply enough torque to the axle ( example hard acceleration).

If the case has been flexed, ring gear damaged, is the housing still useable???

Its iffy. If the tech could read .022" backlash upon disassembly ( assume it was within spec when new) I would say the housing was sprung to some degree. Will it happen again? it might if the axle ever sees that much strain again.

Should I have the differential housing inspected? Replaced?

If it happens again, definitely.

Would a housing made from a different material (H3's are aluminum) be more stable?

The housing looks pretty light from the pics, heavier casting w/billet bearing caps would be better. Nodular iron would definitely be stronger.

Is there any manufacturers who produce a Cast iron or some other type of Steel housing?

Yes. There alot of options. How strong do you want to go?$$$$$$$ I think I will wait and and see how the General addresses this issue. You can bet they know they have a problem by now. I bet they are doing tests to see how much torque it take to distort those housings. Anything YOU do will void the warranty.
I fought housing flex in certain Dana 44s (they are not all cast the same) before. Bottom line: when I reinforced the housing and stopped the flex(distorsion) I stopped breaking ring & pinion gears.

[HummBebe]

Thank you Hummie2.

I will be going back to the scene of the carnage in August. Chop Chop GM....momma needs a new diff

[NEOCON1]

thanx Hummie , great info for us :D :D

[H3 Hummer]

i might pinch you on the bottom , but I would never slap you :p well , i guess i could slap you on the bottom ;) :D

X2 :)

[HummBebe]

[quote=HummBebe]I think you (and rckrawl) are definitely on to something.....![quote=HummBebe]

Questions:

If the flex causes the pinion gear to shear off ring gear teeth, then this would occur under extreme "Flex" conditions? With IFS???

[quote]Don't confuse suspension flex with housing flex (distorsion). The housing distorts out of shape from the torque load on it. You could do it on smooth level surface if could apply enough torque to the axle ( example hard acceleration).
If the case has been flexed, ring gear damaged, is the housing still useable???

Its iffy. If the tech could read .022" backlash upon disassembly ( assume it was within spec when new) I would say the housing was sprung to some degree. Will it happen again? it might if the axle ever sees that much strain again.
Should I have the differential housing inspected? Replaced?

If it happens again, definitely.
Would a housing made from a different material (H3's are aluminum) be more stable?

The housing looks pretty light from the pics, heavier casting w/billet bearing caps would be better. Nodular iron would definitely be stronger.

Is there any manufacturers who produce a Cast iron or some other type of Steel housing?

Yes. There alot of options. How strong do you want to go?$$$$$$$ I think I will wait and and see how the General addresses this issue. You can bet they know they have a problem by now. I bet they are doing tests to see how much torque it take to distort those housings. Anything YOU do will void the warranty.


I fought housing flex in certain Dana 44s (they are not all cast the same) before. Bottom line: when I reinforced the housing and stopped the flex (distorsion) I stopped breaking ring & pinion gears.


One last Q:

How does one "reinforce " the housing and stop the flex?

[DRTYFN]

One last Q:

How does one "reinforce " the housing and stop the flex?

Buy an H2.:D

I'll bet GM is already has or is currently working on a solution. Sounds slightly reminiscent of the casting flaws in some/all of the early H2 front diffs.

[f5fstop]

[quote=HummBebe]I think you (and rckrawl) are definitely on to something.....!

Questions:

If the flex causes the pinion gear to shear off ring gear teeth, then this would occur under extreme "Flex" conditions? With IFS???

Don't confuse suspension flex with housing flex (distorsion). The housing distorts out of shape from the torque load on it. You could do it on smooth level surface if could apply enough torque to the axle ( example hard acceleration).

If the case has been flexed, ring gear damaged, is the housing still useable???Yes, under most circumstances, so long as it has not grenaded like Mike's
Its iffy. If the tech could read .022" backlash upon disassembly ( assume it was within spec when new) I would say the housing was sprung to some degree. Will it happen again? it might if the axle ever sees that much strain again. Or bearings and races were shot
Should I have the differential housing inspected? Replaced?

If it happens again, definitely.

Would a housing made from a different material (H3's are aluminum) be more stable? It would cause less flex in the housing

The housing looks pretty light from the pics, heavier casting w/billet bearing caps would be better. Nodular iron would definitely be stronger.

Is there any manufacturers who produce a Cast iron or some other type of Steel housing? Yes, AAM makes the identical axle in cast iron

Yes. There alot of options. How strong do you want to go?$$$$$$$ I think I will wait and and see how the General addresses this issue. You can bet they know they have a problem by now. I bet they are doing tests to see how much torque it take to distort those housings. Anything YOU do will void the warranty. Only warranty that would be void if you replace a front axle, would be the front axle, a new front heavier axle should not affect any other parts of the drivetrain
I fought housing flex in certain Dana 44s (they are not all cast the same) before. Bottom line: when I reinforced the housing and stopped the flex(distorsion) I stopped breaking ring & pinion gears. I did the same, and I ended up busting axles. Every part of the drive train has a weak link, something will break if too much torque is applied with too much weight and too much restriction, in my Jeep it was the axle shafts. Personally, I would prefer the shafts, easy to replace in the field, and inexpensive.

Just MY opinions on this issue

[rkcrawl]

[quote=Hummie2]

Is there any manufacturers who produce a Cast iron or some other type of Steel housing? Yes, AAM makes the identical axle in cast iron

Just MY opinions on this issue

The above is good info... that means there is a direct bolt in replacement made of what should be a higher strength (albeit heavier) replacement. I'm sure that the aluminum case was used for weight savings, but if its proven that case deflection is whats causing this issue, it was a bad choice.


I fought housing flex in certain Dana 44s (they are not all cast the same) before. Bottom line: when I reinforced the housing and stopped the flex(distorsion) I stopped breaking ring & pinion gears. I did the same, and I ended up busting axles. Every part of the drive train has a weak link, something will break if too much torque is applied with too much weight and too much restriction, in my Jeep it was the axle shafts. Personally, I would prefer the shafts, easy to replace in the field, and inexpensive.


Any of us here who has seriously wheeled has broken more then our fair share of parts. I've busted R&Ps, 9" ford cases, bent housings, axle shafts, transfer case output shafts, driveshafts, etc. I eventually ended up with Dana 60s front and rear, then my axle problems went away (in that rig... :D)

[HummBebe]

Would Dana 60's be a viable replacement in the H3??? Is it possible? I would like to change to 4:88's as I have 35" tires.

Would West Coat Differential be the people to talk to???

http://www.differentials.com/

[rkcrawl]

Would Dana 60's be a viable replacement in the H3??? Is it possible? I would like to change to 4:88's as I have 35" tires.

Would West Coat Differential be the people to talk to???

http://www.differentials.com/
The problem with a D60 on the H3 is the front... The front is IFS so a D60 from someone like WCD would probably want to be a full straight axle swap... not sure it you would want to get into something like that. As far swapping in a different IFS diff... That might be very challenging. Doesn't look like a lot of space where the current case is located.

The easy swap (but I guess gears are the issue?) would be the cast iron AAM case which would be a bolt in replacement. Other possible solutions might be the front case from an current GM 3/4 ton IFS 4x4 or maybe a H2 front case? Again space and mounting would probably be the first issues, then connection the outer axle shafts, etc...

I've seen custom 9" housing made, and if the center section fit under the front of the H3 I am sure it could be made to work with the stock IFS. In fact I know of a guy who did just that with a Toyota front IFS. With a nodular case and billet steel bearing caps you would end up with a "nearly" bullet proof front diff (though your probably start stressing the front half shafts :D) and lots of options for a front locker too :D

As much as it would be a pain, for now, I'd let the dealer fix it under warranty before I spent ALOT of money on a customer solution. 1) Maybe GM will own up to fixing it right or 2) You end up doing something else once the warrantly is up and you've had time to really investigate solutions.

I'll be on the trails with mine soon and if I run into the same kind of issue, I'll be looking into solutions as well.

[HummBebe]

Theoretically could this happen in a mall if you gunned it on sticky pavement?

LMFAO!!!:D

I'm sure that's how Sewie busted his.

[Hummie2]

Yes, AAM makes the identical axle in cast iron

f5fstop... do you happen to know what application the cast iron version is used in? Year, make, model would be nice to know if possible.:D

[Sewie]

LMFAO!!!:D

I'm sure that's how Sewie busted his.

How would you know, you were out shopping at the time. :p

[f5fstop]

Yes, AAM makes the identical axle in cast iron

f5fstop... do you happen to know what application the cast iron version is used in? Year, make, model would be nice to know if possible.:D

Not sure without doing a parts check, and not even sure if GM uses the cast iron version. If they do, it would be in a half-ton pickup. The Colorado/Canyon uses different axles.

[4Skin]

Does the H3 share the same tranny as the Liberty? That's bad news.

[HummBebe]

Ok, been researching, the Range Rover and Nissan 4x4 are having a similar issues. Aluminum Cases....go figure.

The only front axels I can find so far are GM 8.25 IFS and 9.25 IFS.

The only reason I am on this , is I already have 27K miles. By the time GM gets around to finding a fix, my warranty will be out.

That does not make me happy. I still have not been reimbursed from my dealer from the April failure.

Besides, I don't do "waiting" well :D

[rkcrawl]

Does the H3 share the same tranny as the Liberty? That's bad news.
Thats doubtful. The H3 has a GM 4L60E transmission.

edit: Whoops, I don't know about the manual transmission... They could be the same.

[rkcrawl]

Ok, been researching, the Range Rover and Nissan 4x4 are having a similar issues. Aluminum Cases....go figure.

The only front axels I can find so far are GM 8.25 IFS and 9.25 IFS.

The only reason I am on this , is I already have 27K miles. By the time GM gets around to finding a fix, my warranty will be out.

That does not make me happy. I still have not been reimbursed from my dealer from the April failure.

Besides, I don't do "waiting" well :D

Is your H3 a daily driver or your toy? If a toy, WTH, why not consider a straight axle swap and get rid of the IFS altogether in the front? :D Someone has to be first. :D Though the can of worms that would open is pretty big.

Did they replace your case last time or just install a new R&P?

[Desert Dan]

Would a Cast Iron or thick steel cover on the front diff help with any of the flexing??


Also the manual tranny in the H3 appears to be verey similar to the one in my buddies Toyota 4 Runner?? -!-
Some ting wong

[HummBebe]

Did they replace your case last time or just install a new R&P?

No they did not. Just the ring and pinion.

[HummBebe]

Is your H3 a daily driver or your toy? If a toy, WTH, why not consider a straight axle swap and get rid of the IFS altogether in the front? :D Someone has to be first. :D Though the can of worms that would open is pretty big.

It is my daily driver. And my toy:D

[Mike E]

It is my daily driver. And my toy:D


^^ditto^^

[lllateralus]

**from the FJ IN ACTION thread**

....why would you get that when you can get the H3 for just about same price?

THIS THREAD IS WHY!:eek:

[HummBebe]

**from the FJ IN ACTION thread**



THIS THREAD IS WHY!:eek:

Don't worry, the FJ will start busting junk too when someone starts wheeling it hard enough.:rolleyes:

[lllateralus]

Well, it didnt sound like he was wheeling it hard... AT ALL.:confused:

And the FJ is and will be a typical toyota 4X4. Bulletproof for a few hundred thousand miles or more.

(and many FJ's out there have been wheeled quite hard... but im sure you are well aware)

[NEOCON1]

we see alot of the 2 wheel drive models out there ;) bulletproof ? :eek:

[f5fstop]

Ok, been researching, the Range Rover and Nissan 4x4 are having a similar issues. Aluminum Cases....go figure.

The only front axels I can find so far are GM 8.25 IFS and 9.25 IFS.

The only reason I am on this , is I already have 27K miles. By the time GM gets around to finding a fix, my warranty will be out.

That does not make me happy. I still have not been reimbursed from my dealer from the April failure.

Besides, I don't do "waiting" well :D

I'm assuming you got pre-authorization from the dealer or Hummer before the repairs were performed in Moab? If so, who gave the authorization the dealer or Hummer assistance? Let me know, I might (and I say only might) be able to call someone; especially if the ok for the repair came from the assistance center.

As for the front diff; AAM makes a cast iron 760 axle, that is supposed to be identical to the aluminum axle currently being used on the H3.


I believe somone asked about the manual trans, the H3 uses the Aisen AR5, and this could well be the same trans used on many other vehicles.

[HummBebe]

I called my dealer from the trail, they said they would send parts. The parts were ordered from the Salt Lake Dealership. I spoke with them. No one asked me to call the Assistance Center. Neither my dealer nor the Salt Lake dealer.

Neo's items were fully repaired, they were authorized to cannibalize a new truck to repair his. They covered everything fully.

My dealer asked me to pay for the parts and bring them in when I returned from Moab. I did.

My Service manager said he needed to speak to his rep first (I'm assuming the GM Warranty rep?). I recieved one phone call about two weeks ago telling me they were still working on it.

My service manager did say, he did not see any problems with being reimbursed, however, it was on April 21st that the breakdown occurred. No one has called since.:(

I don't know if you can help, but any assistance would be welcome and greatly appreciated.

[f5fstop]

Well, it didnt sound like he was wheeling it hard... AT ALL.:confused:

And the FJ is and will be a typical toyota 4X4. Bulletproof for a few hundred thousand miles or more.

(and many FJ's out there have been wheeled quite hard... but im sure you are well aware)

Yea, Toyota's are bulletproof. Tell that to a friend of mine who had his Land Cruiser towed off the White Rim Trail, outside of Moab, a few years ago. Lucky he had a tow strap. He didn't hit anything, and for those who have traveled the White Rim Trail, know there is nothing he could hit to damage the vehicle. However, his trans grenaded for no apparent reason. Toyota paid the tow to Grand Junction, and replaced the trans without a whimper, so that is good.
My ex-girl friend in TN, had a Toyota Echo, and that was the biggest piece of S**t I have ever seen. It spent more time in the dealer than any car I have ever had (except for my wonderful Caterra:( ), and except for a few Jeeps, all my vehicles in the past 15 years have been GM.
I'm not saying Toyotas are bad, just have a problem of people implying they never break. Anything man-made can break.

[f5fstop]

I called my dealer from the trail, they said they would send parts. The parts were ordered from the Salt Lake Dealership. I spoke with them. No one asked me to call the Assistance Center. Neither my dealer nor the Salt Lake dealer.

Neo's items were fully repaired, they were authorized to cannibalize a new truck to repair his. They covered everything fully.

My dealer asked me to pay for the parts and bring them in when I returned from Moab. I did.

My Service manager said he needed to speak to his rep first (I'm assuming the GM Warranty rep?). I recieved one phone call about two weeks ago telling me they were still working on it.

My service manager did say, he did not see any problems with being reimbursed, however, it was on April 21st that the breakdown occurred. No one has called since.:(

I don't know if you can help, but any assistance would be welcome and greatly appreciated.

I can't interact with dealers, I was hoping the assistance center had gotten involved. What I would suggest is to call the dealer and ask why he has not reimbursed you for the claim. If there is a problem with Hummer, let me know; as you probably already know, I love busting the chops of the Hummer Brand Quality Manager, and I have no problem emailing him to see if he can help get this solved.
If it is a problem with the assistance center, I can write an old friend who is in charge of the Gm assistance center in Cambridge Ontario, and the Saturn Assistance Center in TN. He may not be directly in charge of the Hummer center in Austin TX, but he should have some contacts. Besides, he is a Utah boy, born and raised in Utah, and then went to work with GM. So he might appreciate the H3 failed in his old home state, Utah.

Let me know, you should have my email address, if not, just PM me and I'll help all I can to get you your money back. Can't guarantee anything, but possibly I can help.

[ketcat]

So if the AAM 760 is identical that sounds like a good alternative (assuming all the mounting points, gear ratios etc are the same). Does anyone know what the 760 was or is currently used in?

http://www.aam.com/technology/tech_prod_dl_frontaxle.html (http://www.aam.com/technology/tech_prod_dl_frontaxle.html)

I checked their web site and they don?t list a 760, just a 725 in aluminum or iron and a 763 in iron which looks different in the picture.

[HummBebe]

http://www.drivetrain.com/

These guys look like they might know:D Cool site.

[ketcat]

Thanks I may call them. I am very interested in finding my options. I go four wheeling with the wife and kids so reliability is the highest priority for me.

[f5fstop]

Sorry, meant the 725, why I typed 760 even amazes me.:confused:

[Idaho-Hummer]

http://www.aam.com/technology/tech_prod_dl_frontaxle.html (http://www.aam.com/technology/tech_prod_dl_frontaxle.html)

a 725 in aluminum or iron and a 763 in iron which looks different in the picture.


Did anybody else noticed that these guy's have a bunch of locking differential that are compatible with abs and traction control systems that can be turned on via a user. I will admit that I kn ow very little in this area, but could we not get them for our front locker?


http://www.aam.com/technology/tech_prod_dl_diff.html

[ketcat]

Sorry, meant the 725, why I typed 760 even amazes me.:confused:

I call it "fat finger syndrome" :D I fall victim to it on a daily bases.

Thanks for all your help.

[ketcat]

Did anybody else noticed that these guy's have a bunch of locking differential that are compatible with abs and traction control systems that can be turned on via a user. I will admit that I kn ow very little in this area, but could we not get them for our front locker?


http://www.aam.com/technology/tech_prod_dl_diff.html

AAM is a major OEM supplier which make's a large variety of products but I don't believe they even sell to retailers let alone individuals. I'm not sure how the diff will handle it but the best bet for an H3 front locker is probably www.amstarfun.com (http://www.amstarfun.com/) (fyi there are a bunch of other posts about Amstar). I have been keeping contact with my dealer and will install the locker when its available. I may even make the jump to the cast iron 725 if people continue to have diff issues and the 725 is truly a direct bolt in replacement.

[HummBebe]

I can't interact with dealers, I was hoping the assistance center had gotten involved. What I would suggest is to call the dealer and ask why he has not reimbursed you for the claim. If there is a problem with Hummer, let me know; as you probably already know, I love busting the chops of the Hummer Brand Quality Manager, and I have no problem emailing him to see if he can help get this solved.
If it is a problem with the assistance center, I can write an old friend who is in charge of the Gm assistance center in Cambridge Ontario, and the Saturn Assistance Center in TN. He may not be directly in charge of the Hummer center in Austin TX, but he should have some contacts. Besides, he is a Utah boy, born and raised in Utah, and then went to work with GM. So he might appreciate the H3 failed in his old home state, Utah.

Let me know, you should have my email address, if not, just PM me and I'll help all I can to get you your money back. Can't guarantee anything, but possibly I can help.


I received a call this afternoon from my Service Manager, the check is in the mail:D:D:D:D:D I should have it before the end of the week.

[HummBebe]

Also, would someone be able to verify that this is the coveted 725 IFS that we seek???

http://www.differentials.com/pdfs/24.pdf

Thanks!

[NEOCON1]

dar has been dealing with hummer , hotel reinbursement no problem :D , the 1 day jeep rental not sure . we wrote a long letter explaining everything so we will see :cool: i was just happy to get the truck fixed but this is great :D