thermostat

  1. H

    LLY Thermostats

    I’m thinking I need a set of thermostats in my truck. I just replaced my block heater maybe 2,000 miles ago, so my coolant is rather new. My question is can I get away with not draining the whole system for this job? If so does anyone know the minimum amount needed to drain to not make a mess...
  2. D

    LBZ: Thermostat sensor trouble code

    My 2006 LBZ is throwing a trouble code. Thermostat Sensor is the result. The truck is running at about 180 degrees. The mechanic that read the code said that operating temp. was too low and that the thermostat was probably stuck open.Another person said it may just be the sensor. Mileage is...
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