Coolant Leak From Heater Core on Chevrolet Malibu

Problem Description and Possible Solution

The heater core under the right side of the dashboard may leak engine coolant which can puddle on the passenger front floor. The loss of coolant may cause an engine overheating condition. Our technicians tell us that removal of the dash board is necessary to replace the heater on these vehicles.

Problem Data
RepairPal Verified
Average mileage: 129,172 (42,500–250,000)
12 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2005, 2008, 2010, 2011, 2013
32 people reported this problem
Viewing 1 - 11 of 11 comments
2013 chevy malibu heater core was leaking and vapors were coming in thru the ac vents. A really sweet smell. Heater core had a small leak, the coolant was leaking a little and would evaporate into the ac vents.
I had extended warranty, I purchased. The total cost would have been around $800.00. Seems to be a common issue with Chevy!
I haven't fixed the issue yet, however I am going through a gallon of coolant a week, the antifreeze smell comes through the heat when I put the heat on, my passenger side rug (floor) is always wet.
Noticed the "sweet smell" of anti freeze when first got the car new.It's my wife's car,so I 'm not in it much and only noticed it when the heat was on. Now I can't stand to be in it,get nauseated. Car goes in soon to get looked at.Get ready to bend over