1996 Cadillac Deville heating system

Tiny
DTHOMAS1965
  • MEMBER
  • 1996 CADILLAC DEVILLE
  • 4.6L
  • V8
  • FWD
  • AUTOMATIC
  • 170,000 MILES
Turn on heater and steam comes out of defrost and antifreeze ran on floor
Saturday, February 14th, 2015 AT 4:39 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
Time for a new heater core. To prevent repeat failures and corroded radiators, be sure to replace the coolant every two years, especially if you still have that miserable Dex-Cool antifreeze in there. It is normal for acids to build up in the coolant, and the additives in antifreeze that neutralize that wears out in about two years.
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Saturday, February 14th, 2015 AT 4:54 PM

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