2003 Hummer H2 thermostat

2003 HUMMER H2
88,000 MILES • V8 • 4WD • AUTOMATIC
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MSHOPEY
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  • 1 POST
do i need to drain the antifreeze first? never seen the thermostat on the bottom radiator hose.
Oct 31, 2009 at 11:57 AM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
Yes, you will need to drain the cooling system before replacing the thermostat.
Oct 31, 2009 at 10:29 PM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
Where the lower hose meets the water pump is where the T-stat is.
Nov 4, 2009 at 9:29 PM
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