Mechanics

ENGINE LIGHT

2006 Hummer H2

Engine Mechanical problem
2006 Hummer H2 V8 All Wheel Drive Automatic 95.000 miles

engine light came on checked with analyzer found p0300 code multiple cyl misfire changed coil packs, plugs, wires, ran awhile light back on same code, motor seems to run fine also changed gas cap to no avail sometimes light goes out then under heavy acceleration light comes on
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Liotfan
June 1, 2010.



P0300 Random misfires normally caused by vacuum leaks and bad fuel

Rasmataz
Jun 1, 2010.