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  1. Terrain General Discussion
    Hi everyone, I am new here, and just got a 2018 GMC Terrain. I am having issues apparently with the thermostat (the vehicle heats up a lot, but the coolant/water tank is full). I took it to a GMC dealer and they told me most possibly is the thermostat. Only the diagnosis costs $175. After that...
  2. General Tech Section
    Hi everyone, I am new here, and just got a 2018 GMC Terrain. I am having issues apparently with the thermostat (the vehicle heats up a lot, but the coolant/water tank is full). I took it to a GMC dealer and they told me most possibly is the thermostat. Only the diagnosis costs $175. After that...
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