• Tiny
  • djfar
  • 2006 Hummer H3
  • 5 CYL
  • automatic
  • 111,000 miles

How often should thermostat on 2006 hummer h3 be replaced?

Wednesday, May 11th, 2011 AT 9:38 PM

1 Answer

  • Tiny
  • factoryjack
  • Expert
  • 4,263 posts

Does not have to be a regularly serviced item. Most often I replace them due to a check engine light and P0128, fails to reach operating temperature, code. I changed one in a 2008 last Monday that was improperly regulating temperature, that had no code. The customer complaint was that the gauge moved around on long drives. I determined with a scan tool, that the engine would take a long time to reach about 175, and picking up the speed(increasing flow) would actually drop the temperature about 10 degrees.

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Friday, May 13th, 2011 AT 4:31 AM

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