2007 Hummer H3 foging up

Tiny
MYRA1963
  • MEMBER
  • 2007 HUMMER H3
Heater problem
2007 Hummer H3 6 cyl Four Wheel Drive Automatic

I have a coolant smell inside my truck and the windows are fogging up
Saturday, December 19th, 2009 AT 4:02 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Also look for pink dexcool at the evaporator drain in the engine compartment, it is below the heater hoses. You have a heater core leaking. You don't have miles listed, but if it is still under warranty, that is to your benefit. It is about an 800-1000 dollar repair.
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Saturday, December 19th, 2009 AT 9:38 PM

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Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.

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