Check engine light comes on for a short time and goes off. This happens at random.
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2006 Hummer H3 Question: Check engine light comes and goes at random
Answer #1Visitor, March 17, 2011, 09:02
Had that same problem and now it finally came on all the time. I am told it is my Coolant Temp Sensor. I was told to check my Coolant levels because that could cause the problem.