If you smell antifreeze and heat doesnt work but blows air

Do you smell coolant inside of the vehicle. If so then chances are your heater core is going.

check your hoses and make sure its not getting low because when it gets low the hoses can get hot enough to expand and spit out antifreeze without overheating

glad you found the problem

Hi Jeff. I had the same problem, along with others on my 03 Denali. Along with not blowing hot air from the rear heating system, I had hot air blowing out of the passenger side and cold air out of the drivers' side vents. My battery would go low and had the same smell. I took my Denali in to the dealer and they found it was a bad Fan Control Module. They replace it and everything worked well after. It cost me $293 for parts and labor. Hope this helps.

sorry to say u need a heater core and the system flushed

likely a leaking heater core, the smell is likely antifreeze

Heater core or one of the hoses are leaking. Low on antifreeze now so no heat.

Hi i'm ryan, is it blowing cold air, or just won't come on at all? If its blowing cold air try checking the antifreeze level, low levels will cause it to blow cold air. If it is just not comming on at all, try checking the fuse for the heater.

i think you may have a blown head gasket

blower motor is behind the glove box. also check the blower resistor it should be nex to the blower motor