Hummer H3 5 Cylinder. We Rebuild top quality Engines using high tech computer numerical control CNC equipment. In fact the 2006 H3 was so problematic for many owners and most of the problems were from factory defects.
The compact Hummer H3 SUV would also come standard with the Atlas 5-cylinder. They are presented somewhat in order from most to least likely to be causing the code. A five-speed manual transmission was standard while options included a four-speed automatic transmission and a locking rear differential.
The 2007 Hummer H3 has 41 NHTSA complaints for the engine at 82127 miles average.
For 2007 the H3 receives a new Vortec 37-liter inline-five-cylinder engine with dual overhead cams and variable valve timing. According to ConsumerGuide the HUMMER H3 2008 averaged 171 mpg in a mix of cityhighway. It wont be the fifth cylinder that you might see when looking at the engine. Jul 24 2008 The EPA rates the HUMMER H3 at 1418 mpg with the five-cylinder and 1316 mpg for the eight-cylinder.
