My 2006 hummer3 would not start so I replaced the battery, now my check engine light is on! What could this mean?
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
Thank u. Is it alright to drive?
yes, 3/4s the cars on the road have the light glowing, Over engineered electronic scrap
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