Question about 2005 Chevrolet Trailblazer Ext

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I have a 05 Trail Blazer that smells of antifreeze when heater/ac is on?

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You may have a heater core leaking. have a shop do a pressure test on the cooling system and confirm it. if you dont want to repair it, you can have them bypass the heater core

Posted on Sep 26, 2009

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Related Questions:

1 Answer

Can you tell me why my truck smells antifreezy when I started


Is the heater or ac fan on....? Where is the smell coming from?

my thought are if smell coming from exhaust, you have a head gasket problem.

If smell coming from AC or heater, likely a heater core leaking!

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When I turn my heater on there's a sweet smell.


Hi, fix the water pump leak,the smell could be coming from he antifreeze burning off the hot engine .

Mar 26, 2014 | 2001 Chevrolet Blazer

1 Answer

The inside front window is getting clouded and there's a antifreeze smell


Sounds like the heater core is leaking. Locate where it is and see if antifreeze is leaking out the bottom.

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Antifreeze smell when fan turned on


if your talking the heater or ac fan you may have a heater core leak

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I have a 1999 chevy blazer with smoke coming out the vents when the defroster is on. What's the fix?


often that smoke is actually misty antifreeze from a leaking heater core. wipe a little of it up and sniff. sickly sweet smell it is heater core time.

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1 Answer

Where is the fuel filter located on my 2004 Chevy Trail Blazer? WE


On 05+ Trail Blazer, the fuel filter is integral with the fuel pump inside of the fuel tank. It is a non-serviceable part. On 02-04s, the filter is on the drivers side frame rail at about the B-pillar. If your trail Blazer is a late 04 which means that it was build close to the 05 Trail Blazer, you may have a non serviceable fuel filter. Good luck and check under your Trail Blazer or look at your manufactured date sticker on the door which would help you indicate if your 04 is a early Trail Blazer and you'll have the fuel filter on the inside frame rail under the driver's door.

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1 Answer

Radiator/Heater Coil Issue on 2002 Chevrolet Blazer


It is very possible that your heater CORE is bad. You will smell a sweet odor of antifreeze inside your vehicle if it is leaking, and possibly feel for a wet spot on the floor boards. Need to replace heater core.

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1 Answer

Smoke coming out of vent when defoster is on 99 chevy blazer


what does it smell like? antifreeze, burning wires, oil, no smell, here is my best guess, 1- heater core, 2- heater blower motor burning up, 3- engine oil, and 4- steam condensation, 5- a ghost.

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2 Answers

Antifreeze smell and smoke coming out of vents


You have a coolant leak most likely in the heater core. Try disconnecting your heater hoses and coupling them together, then running the engine to see if the leak goes away. If it does, I would have the heater core replaced.

Dec 28, 2008 | 2001 Chevrolet Blazer

1 Answer

Smell coolant when heater is turn on...


the heater core inside the dash is leaking, it may get worse and coolant will start to drip on the floor out of the heating outlet

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