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  1. Towing & Hauling
    Hello, I have a 2008 LMM And I was towing my trailer in the Nevada mountains. Nothing extreme… my trailer was probably around 7000-7500lbs. Truck has 200k on it and when I was towing, my ECT got up to 230 degrees and so did my trans temp. My thermostats are about 1.5 years old so they’re still...
  2. 01-04.5 LB7 Duramax Powertrain
    Hello New Member as of today although I frequent these forums quite often. Very useful and informative and helpful folks here. My issue is my trans temp. It says it's over heating when it isn't. I have used a laser thermometer and it stays around 130-160ish not towing and the weather is around...
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