2005 CTS coolant puddle on passenger floor

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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 2005 CTS coolant puddle on passenger floor in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I own a 2005 cts. Its been going low on coolant periodically for the past 6 months with no puddles ...
  1. #1
    dewout is offline Cadillac Owners Member
    Join Date
    Sep 2013

    2005 CTS coolant puddle on passenger floor

    I own a 2005 cts. Its been going low on coolant periodically for the past 6 months with no puddles in the driveway or when parked. Yesterday after a short drive (less than 3 miles) went into my destination and came out to car dripping liquid. Opened passenger front door and there was an orange puddle on the floor. Coolant.... There's also been a odd ping pong ball sound in the dash when the car is started and it increases with engine RPM's. Any advice?

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  3. #2
    ztollon's Avatar
    ztollon is offline Cadillac Owners Enthusiast
    Join Date
    Aug 2012
    Sounds like a heater core but im not too sure.

  4. #3
    Planktron's Avatar
    Planktron is offline Cadillac Owners Fanatic
    Automobile(s): 03 CTS 5M Luxury/Sport: V rear bumper and V exhaust
    Join Date
    Aug 2013
    Tampa, FL
    No idea on the ping pong ball sound, but coolant in the passenger footwell is classic heater core. You can bypass the heater core for about $10 to get you by. Most newer vehicles require the dashboard to be removed to gain access for replacement.

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