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2003 Hummer H2 thermostat

Tiny
MSHOPEY
  • MEMBER
  • 2003 HUMMER H2
  • V8
  • 4WD
  • AUTOMATIC
  • 88,000 MILES
Do I need to drain the antifreeze first? Never seen the thermostat on the bottom radiator hose.
Saturday, October 31st, 2009 AT 11:57 AM

2 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Yes, you will need to drain the cooling system before replacing the thermostat.
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Saturday, October 31st, 2009 AT 10:29 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Where the lower hose meets the water pump is where the T-stat is.
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Wednesday, November 4th, 2009 AT 9:29 PM

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