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1998 Cadillac DeVille Coolant Leaks From Water Pump and Radiator

The water pump and/or the plastic side tanks on the radiator may leak causing a loss of coolant . The engine may overheat due to coolant loss. Continued coolant loss after external leaks have been repaired could indicate a blown head gasket .

Affected Model Years

This issue affects Cadillac DeVille model years 1990, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, .

90 people reported this problem

  • 1998 89,000 Miles
    I am loosing coolant and I believe it is coming from the water pump.I have not had any overheating problem yet.
  • 1998 126,725 Miles
    My car was parked and all my antifreeze leaked out
  • 1998 236,000 Miles
    when i put water in the car still runs hot and all the antifreeze runs out under the bottom of the car. antifreeze runs out very fast
  • 1998 135,000 Miles
    The radiator leaks at driver side bottom.Around a nut shaped plug.
  • 1998 188,723 Miles
    i replaced the radiator and water pump about a year ago.i recently replaced the resivour tank.car still runs hot at speeds over 65mph .temp is constantly up and down 196 to 245.i have to put antifreeze in at least once a day.
  • 1998 152,458 Miles
    I changed out my water pump supposedly there is some sort of line slash whose that is suppose to push up against when I mount it back up well it's still leaking what's the problem and how do you fix it is this repairable
  • 1998 187,000 Miles
    Losing antifreeze and finally replaced the water pump, thermostat, belt.
  • 1998 54,000 Miles
    Problems with leaking coolant.Cost to fix: $ 750 to $ 1000. The problem? Northstar engine!The engine is nothing but junk!!
  • 1998 85,000 Miles
    coolant leaks. haven't found the problem yet.
  • 1998 75,000 Miles
    check cooling light cont to blink while driving
  • 1998 0 Miles
    Coolant started leaking and then spraying onto inside of hood. Then car stared overheating and can't hold coolant. Now head gaskets are said to be bad.
  • 1998 133,000 Miles
    Coolant leaks out immediately as I'm pouring it in
  • 1998 123,000 Miles
    The crossovers began leaking coolant. When this happens the coolant may mix with dirt from the engine or ground and appear to be oil. Heritage Cadillac robbed me of $ 1,500 by replacing the head gasket, knowing the crossover gasket was defective. Eventually, Heritage Cadillac replaced the crossover and water pump for another $ 1,500, only to say my electronic shocks were going bad. It's been a year later and my shocks are fine.That Heritage Caddillac of JONESBORO, GA. Go to PEP BOYS, they won't cheat, lie, and overprice you.
  • 1998 80,320 Miles
    Radiator has been replaced once already at 70000 miles. The leaks persist but are not severe, yet. Average is perhaps 1/2 gallon per month/200 miles of travel.
  • 1998 40,000 Miles
    a slow leak of coolant was coming from the water pump. water pump was removed and replaced to solve problem.
  • 1998 115,000 Miles
    Coolant overheating
  • 1998 0 Miles
    I bought the car and drove home (about 15 miles) and all the water leaked out and the car overheated (265 deg.) I parked it and have not driven it since. I need to buy a new radiator at a cost of $ 180 minimum.
  • 1998 12,000 Miles
    runs for awhile then overheats
  • 1998 0 Miles
    Over heating
  • 1998 57,791 Miles
    Still trying to fix this issue.

Cadillac DeVille 1998 Common Problems