07 Humm H3 CV shaft and TC failure help!

[TG_Kane]

CV and TC help! Hit a huge pothole just outside of Tok, AK. Pulled over to see what the damage was. Front passenger side sway bar link snapped clean off.
Front passenger CV shaft snapped and twisted up.
My manual transmission hummer could not shift into any gear! Tried 4 hi, lock hi and lock low. No dice.
Just got a grinding noise that could have either been the TC or the CV. The drive shaft is free spooling into the TC! Hummer won't move.
Needed a 2 and a half hour tow to Glenallen, AK.

Mechanic found broken CV and sway bar link.
But it doesn't seem clear to either of us why the rear axel is disabled too.
Maybe rear wheel drive has been disabled for awhile now? Have I only been driving front wheel this whole time?

Waiting in Glenallen right now for new CV, but not quite convinced that's the only problem here.

New to this thread. Just trying to gather up all the information I can get. New hummer owner.
Thanks you guys.

TG_Kane

 

[jphh20]

If I understand correctly, the transfer case grinds when selecting lock mode while the truck is running? If so, try selecting 4Hi lock with the truck off and key in the on position. This should try to engage the transfer case in lock mode without grinding. It sounds like your truck is trying to spin the broken axle shaft and applying power to the spinning shaft.




Joe

 

[TG_Kane]

Ok I will try that when it gets out of the shop.

After I hit that huge f*ing alaskan pothole, I drove for about a quarter mile, then the passenger CV went out. That is the source of the grinding. Is it possible that the load release on the TC might have knocked it out of 4 hi while running? Engine and clutch seems to be ok.
Have not tried to lock it out on 4 hi with the engine off yet. Rookie mistake.

Thanks for the reply.



Tanner

 

[alrock]

See this thread http://www.hummer4x4offroad.com/forum/showthread.php?10529-Transfer-case-problem. Breaking a CV axle has the same effect as breaking a diff. You'd need to put it in 4 high lock to keep moving.

 

[08H3]

I have nothing constructive to add, although I do hope you get it sorted out soon. What I DO want to see is a picture of this pothole! I thought we had some bad ones around here. Apparently not.

 

[freeze]

If you have a plastic shifter fork in your transfer case, it could be worn and not actually moving the collar to lock your transfer case. You would have the lights above the buttons light up correctly and it would sound like it is shifting, but you would be stuck in awd.

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