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Hello, my name is XXXXX XXXXX welcome to JA.
I need a little more information so that I can be sure I understand what your hummer is doing.
Does this problem happen when you are just sitting in Park idling, or is it while you are driving?
Is there any noise associated with this vibration?
Is there anything you have found that you are able to do that makes it either better or worse?
Thank yo, looking forward to helping.
Ok, thanks for the info.
I am reviewing some technical bulletins and other infor pertaining to this issue, and I need to ask just a couple more questions to make sure I'm on the right path with some of this.
How many miles are on your H3?
Have you had any check engine lights come on with this?
Did the service performed by the dealer make any difference?