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silverado 2010

  1. 07.5-10 LMM Duramax Powertrain
    hi everyone i am experiencing this problem on my 2010 silverado 3500 6.6 the coolant level is normal when the truck is idling or off but when i start it and drive the raises above the maximum coolant mark almost reaches the cap. i noticed that the truck is not warming up the other day i drove...