smell of antifreeze in cab

1999 CHEVROLET SILVERADO

BIGBIRD99

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When i get in my truck and turn the key, and turn the ac on i smell a light order of antifreeze, but when i turn the heater on i smells worse, but there is no leaking of fluid on the floor at all, and none under the hood at all? Can u help me solve my problem

Nov 15, 2007 at 9:26 PM

KASEKENNY

CERTIFIED EXPERT
18,907 POSTS

This is due to a heater core leak that is actually allowing a small amount of coolant to be blown into the cab where you are smelling it.

Unfortunately this means we are going to have to replace the heater core.

Here is a guide that will help with doing this:

https://www.2carpros.com/articles/replace-heater-core

You will find the process from the manual that will help with giving the detail needed to replace the heater core on this vehicle.

Please run through this info and let us know what you find or if you have questions on this.

Thanks

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Jul 23, 2021 at 8:55 PM