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Well my transmission will not shift from second up to third, so think i need a rebuild. I’m going to make an appointment at a local shop to see what they charge to rebuild it and what the warranty is, does any body have an on-line order recommendation? Also did the alpha and the standard have...

Are there any options for the H3 front CV axles for upgrades in strength, angularity, etc…? Someone on here posted a link to Trakmotive extended travel cv shafts which look awesome, but I contact them and they make nothing for the H3.

So are the aftermarket options for the front diff for a full locker ARB and Eaton E-locker? And in regards to the Eaton e-locker is the stock locker that comes in the front of some H3’s is that an Eaton e-locker or is that a GM product? Next question Eaton doesnt list the Eaton e-locker for...

Anybody have a source for a cast iron front diff carrier for the H3, everywhere I look online it says discontinued? Thanks, Randy

I'm looking for the elusive H3 Unicorn, the Rancho Lift Kit, any leads etc, let me know. Thanks

My transfer case needs replaced on my base model 2007 H3. I would like to upgrade to the 4494/NR6 with the 4:1 low range. I will be buying a rebuilt one. The NR6 is a direct bolt-in correct? What about electrical plugs? Anybody have any suggestions where to purchase, Evolution Driveline...

My 2007 Hummer has the HVAC temp control issue with when on all the way cold, one click towards warm and it goes all the way hot. I read the tech article on the resistor mod, but my question is, does this modification take the place of replace the control knobs themselves or does it change...

Hi, new member from South Dakota. Bought a Hummer H3 over a year ago, love it, someone before me tranplanted a LS motor in it so its a blast to drive.