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thermostat
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  1. General Discussion
    Hi, I'm new to the duramax forum and this weekend I will be replacing both thermostats on my lml 6.6 liter. Do I have to use RTV heat silicone on the housing? Thanks Raymond
  2. 01-04.5 LB7 Duramax Powertrain
    Got my truck in June. Temp never went above 200. As fall sets in, I'm finding my temp gauge consistently drops to about 180. I'm guessing this is when the thermostat opens/closes. I hear the Duramax has trouble staying at normal operating temperature in the winter cold. So here is my question...
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