HUMMER H2 ENGINE

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...

I Have Engine Oil Marks Under The Car, Any Thoughts?

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....

Hi, I Have 2006 Hummer H2 And Only 25000 Miles. Engine Running Rough For More Than A Year. Went To The Dealer He Says There Is No Any Code....

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?

I Replaced My Alt With High Out Put One And Now Am Having Hard Time Putting Belt Back On. Help Scott

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. ...

I Need To Replace The Oxygen Sensor 02. I Know It Is On The Drivers Side On The Manifold. How Hard Is It A Job And Can A Novice Replace It?...