HUMMER H2 ENGINE SYMPTOM

Hi, Ihave 2006 Hummer H2 With 25000 Miles. Its Running And Idling Rough For More Than A Year. Dealer Says There Is No Any Code And...

It Acts Like The Battery Is Dead When Trying To Start It But The Battery Is Ok And All Electrical Systems Work Fine It Is When You Turn It...

Hi, I Have 2006 Hummer H2 With Only 25000 Miles And Its Idling Rough And Not Running Smooth As It Used To Be. Its Still Under Warranty....

Engine Running Rough No Code. Sometimes Different Sounds From Exhaust

I Just Bought A 2003 H2 I Know They Have Horrible Mpg Anyway, But Is There Anything I Can Do Myself To Improve The Mpg In Any Way?

2003 Hummer H2 I Have Problem With The Rpm, When I Drive Over The 70 Mph The Rpm Pointer Went All The Way Up And Than Stuck. ...