Question about 2006 Hummer H3
Transfer case seems to be stuck.
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Posted on Jan 02, 2017
SOURCE: hummer h2 transfer case
Only way for this to happen on an H2 (AWD) is for something to break rearward of the lockup hub. Take a look at the splines between the intermediate shaft and centerdifferential or even the teeth on the forward sun gear and/or stepped pinion on the center diff.
As long as you have the t-case torn down for repair be sure to upgrade to the new aluminum mode fork (production upgrade to old plastic forks thru end of 2007 or so). You should also upgrade the rear half of the housing to the 2008 version which has a pressed-in rear prop bushing (better bushing and is also replaceable.
Posted on Sep 30, 2008
I am a Service Advisor for a Hummer Dealer. I can tell you that we have seen some of the 06 h3's with the same problem you are having. The blower motor resistor and harness will probably need to be replaced. The connectors on these have a tendency to melt. If you are still in factory warranty, it will be covered under your warranty, otherwise at the dealer the repair runs around $650.00 parts and labor. Hope this helps.
Posted on Jul 06, 2009
SOURCE: transferbox problems
It's actually stuck on the 4xL, if you keep driving it it might coz a big damage to ur 4wd gear box.
you should change the transferbox (it cost here in Dubai around 1350 US$ with labor charges).
it happened to me 2 months back.
Posted on Sep 08, 2009
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