Question about 2001 GMC Sierra C/K3500

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01 gmc truck 1500 2wd oder of antifreeze inside cab

Smell of antifreeze in cab when i turn defroster on smell is gone after awhile.no visual signs of antifreeze in the floor of passenger side. truck has 140,000 miles. truck runs great. still getting over 20 mpg.

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  • farm_hens21 Nov 20, 2008

    We have a 1993 S10 pick-up. We smell anti-freeze in the cab of truck, but no fluid on floor. What does this mean? Do we need to replace heater core?

  • ksr501 Jan 17, 2009

    have a 95 voyager get a bit of antifreeze smell when defroster is on smell usually goes away. antifreeze is also a bit low in radiator

  • Anonymous Mar 18, 2014

    2010 tribute smelled antifreeze after lest than a mile trip what do I need to check apro 64000 miles

  • Anonymous Mar 18, 2014

    no overheating

  • Anonymous Mar 20, 2014

    Antifreeze odor in cab of truck, heater core not leaking, what could the problem be?

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The small radiator just inside the cab, where the hoses go to the heater is leaking. You may try using stop leak (many don't recommend this) or take off the heater radiator. it will probably get worse when you turn on the heater and fog up the windshield if not fixed. hope this helps.

Posted on Nov 07, 2008

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Have an '86 F250 v8 460 engine. Defrost problem, when it is cold and I run the defroster it produces a haze on the glass and the smell of antifreeze fills the cab. I can see at the bottom of the w


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If not
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