2003 GMC Envoy Thermostat and housing

2003 GMC ENVOY
10,000 MILES • 6 CYL • 4WD • AUTOMATIC
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PSCROSTON
  • MEMBER
  • 1 POST
Where is the thermostat located and is it hard to replafce?
Dec 30, 2008 at 2:46 PM
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BRIAN 1
  • ✓ASE Certified Mechanic
  • 1,030 POSTS
  • ASE Certified Mechanic
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.
Dec 30, 2008 at 9:26 PM
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