Got this in the mail and good thing cause I was having this problem.
Took it to the stealership and got a whole new throttle body at no charge!
No problems since...

 

There is a Special Coverage 14582 showing up in the my.gm.com account I have for a 2009 H3. Shows Expiration Mileage: 120,004 and Expiration Date: 02/01/2020. Has anyone in the US had this done yet? Is it just for the V8, or also for the I5?

 

On my drive to work on the 27th I lost all power, got to the dealer and they replaced it on my 09 H3 I5 free

 

Same for my 2009CE. ........took care of the problem!

 

Does anyone know which the H3 has, a Bosch or an Hitachi throttle body?

 

ACDelco

 

Dealer wants $114 for a diagnostic fee to determine if the rough idle falls under this coverage. If it does, then there wouldn't be any charge for the diagnostic and the new throttle body. I can get a new throttle body for about $135, so I wonder if it's worth the cost, in case it's not covered.

 

I would suggest a ported throttle body.

 

Where can I get one?