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Hello Guys, I just wanted to know if it is a big job to change a heater core on an 2003 Cadillac Deville. On the passenger side of vehicle, I noticed a little antifreeze (Wet) on the floor mats; and also when I used the defroster, it only worked on the drivers side. Any help would be appreciated. Thanks! Steve

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Lets hope it's not the heater core. Major undertaking on the 2003. The dash has to come out. #30 in the picture.

post-2-0-30626000-1361405217_thumb.jpg

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Hello Logan, Judging by these schematics, I sure hope it is not. LOL...It looks like it is going to be, though. Like I said from up above, and also, I noticed I was smelling antifreeze pretty much when I turned the heat on inside the car. Than today, I felt the back of the vents on the floor and notice a wet, smelled like antifreeze, coming out of the vents, and it was a little wet on the floor mats. So, it stinks. But I appreciate and Thank You for responding to my posts.

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