H3 Transfer case issues.....

[Cyrus Avey]

So after wheeling my ass off this weekend I had a cv axle go out on my passenger side. So I put in two new cv axles and took it for a drive. When I would put it under a small load when accelerating the front would kind of want to hop...... So I took out my front drive shaft after getting some advice from Chris, and when I put it in 4hi lock to try it out. It didn't move. So I'm guessing for some reason I lost all power to the rear when my cv axle went???? Maybe it jolted the transfer case and broke something inside???? Any advice or input as to where to get a new transfer case let me know please!!!!


[emoji631]It's a Hummer...... That's why we bought them isn't it........???? To drive up sh*t????[emoji848][emoji631]

 

[alrock]

Are you sure it's not a front diff issue? If you've got a tooth jammed in there it would not want to roll, regardless of whether the prop shaft is attached. Not saying it couldn't be the transfer case, but I think it could just as easily be the diff especially considering you had a CV go out. I would pull the diff cover and inspect inside. That'd be a much cheaper start to your troubleshooting process.

Put it this way. If the diff failed and would not move, but the truck was rolling, the CV joint would fail. It may not have been the CV that failed first.

 

[Cyrus Avey]

Ok your not gonna believe this but I jacked up the front to get the tires off the ground and put it in 4 hi lock and it wanted to drive off the jack stands....... Like it had power to the rear..... But earlier when I took off the front driveshaft it didn't want to go anywhere.......... At all. I'm confused as hell. So I lowered my front a bit because I was kinda hi like 34" and drove it and it did fine, no hopping...... But that still doesn't explain why it didn't want to move earlier without the front driveshaft. This sounds crazy I know. I'm pretty mechanically inclined so I know how odd this sounds......


[emoji631]It's a Hummer...... That's why we bought them isn't it........???? To drive up sh*t????[emoji848][emoji631]

 

[alrock]

If you're mechanically inclined, I'd first inspect the front diff. If nothing is there, then drop the transfer case and crack it open before you go and buy a new one.

 

[Mb30sdl]

It's full time 4wd. If your cv fails car won't move in 4hi unlocked.(same if u remove front drive shaft). U can only move with one or 2 cv failed or front driveshaft removed in 4hi locked or 4low. It's a blessing if it fails on trail, u don't have to fix it there, just throw in 4hi locked and u can make it home easily in 2 wd.

 

[reaper]

Also, are you SURE it was in 4 high lock? Maybe it didn't lock the first time...

Also, for the record, I have a complete unassembled tcase in my garage if you end up needing one.

 

[Cyrus Avey]

I tried like 4 times. Neutral, then hit 4hi lock and I heard the transfer case switch and nothing. And I tried 4 low also and heard it shift and nothing. So today though I lowered the front and it doesn't seem to do the hopping it was doing before. I used precision cv axles from o Reilly's, and I'm thinking that they don't work as good when they get at such an angle as the stock cvs. I was sitting at like 34" for the last two years and never had s shutter when taking off. And now I change them and it starts Doing that. I also broke off one of the links to my rear seat bar this weekend so when I take off hard it squats real bad in the back. And I think that's also causing the cvs to get at too much of an angle and making that hopping happen when the front raises up.


[emoji631]It's a Hummer...... That's why we bought them isn't it........???? To drive up sh*t????[emoji848][emoji631]

 

[Cyrus Avey]

Here some pictures too!!!!! I lost both my mirrors too so if anybody has any.........


[emoji631]It's a Hummer...... That's why we bought them isn't it........???? To drive up sh*t????[emoji848][emoji631]

 

[4speedfunk]

You might drain and refill your t-case fluid. Pay close attention to the old fluid...look for blackish color and/or metallic particulate matter (dust). If it smells burnt...not good. A fluid inspection can tell you if something is amiss.
For some reason, the H3 is very hard on t-case fluid. Many of us have adopted a 20k mile fluid change policy. It takes ten minutes and $10....very cheap compared to a rebuild.

 

[Romeo]

You might drain and refill your t-case fluid. Pay close attention to the old fluid...look for blackish color and/or metallic particulate matter (dust). If it smells burnt...not good. A fluid inspection can tell you if something is amiss.
For some reason, the H3 is very hard on t-case fluid. Many of us have adopted a 20k mile fluid change policy. It takes ten minutes and $10....very cheap compared to a rebuild.

Ohh boy, I've never changed or refilled my tcase fluid. I better get that done and I soected ASAP.

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