Q: Check engine light comes and goes at random on 2006 Hummer H3

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Check engine light comes on for a short time and goes off. This happens at random.
(1) Answer

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.
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