2003 GMC Envoy Thermostat and housing

Tiny
PSCROSTON
  • MEMBER
  • 2003 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 10,000 MILES
Where is the thermostat located and is it hard to replafce?
Tuesday, December 30th, 2008 AT 2:46 PM

1 Reply

Tiny
BRIAN 1
  • MECHANIC
  • 1,030 POSTS
The thermostat is located on the drivers side of the engine block behind the alt. These SUCK to change. You have to remove the alt to get a good shot at it, and if you change it don't break the t-stat bolts because they thread into the block and if you break them plan on drilling them out. These are no fun. Post back with any other questions.
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Tuesday, December 30th, 2008 AT 9:26 PM

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