My 2006 hummer3 would not start so I replaced the battery, now my check engine light is on! What could this mean?
220

Asked by lsr241 Apr 16, 2014 at 12:44 AM about the 2006 Hummer H3 4dr SUV 4WD

Question type: Maintenance & Repair

3 Answers
39,845

James answered 10 years ago

the light comes on when the computer or pcm same thing, senses a fault from one of the monitoring sensors sending the wrong signals. A code reader will direct you to the area of problem. The battery is just for maintaining full 12 volts and cranking starter to start engine

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39,845

James answered 10 years ago

yes, 3/4s the cars on the road have the light glowing, Over engineered electronic scrap

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