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coolant temp sensor

  1. The 02-09 "How-To" and DIY Section
    Hello Folks, I'm decided to flush my coolant system and replace. All was well until I put everything back together. I took the 2006 Envoy 5.3L for a ride an the temperature gauge spiked to the red as I was pulling back into the driveway. I touched the upper radiator hose and it was cool, so I...
  2. OEM Issues
    Hey Guys This is my first post here. I'm a medical scientist and not an engineer or knowledgeable mechanic so bear with me. My trailblazer (2004, 4x4, 4.2L v6) has been making a bit of a humming noise when accelerating to highway speeds. The check engine light is also on which is apparently...
  3. OEM Issues
    2004 Trailblazer Ext, 4.2L Hello everyone. About 2 weeks ago my Check engine light came on; I stayed on for around 2 days and went off. I got to an Auto Zone after it went off and had the code read, they said the code that came up was for low coolant temp, during this whole time my temp gauge...
  4. OEM Issues
    I have been trying to track down a problem with my AC for some time now. Yesterday I put in a new fan clutch and engine thermostat. Im a dummy and I didnt switch out the Engine coolant sensor at that same time. Now I think that sensor may be part of my problem. After replacing those parts I...
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