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.
Average mileage: 105,860 (101,720–110,000)
Engine affected: 4.9L V8
17 people reported this problem
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NEW WATER PUMP INSTALLED STILL SMALL LEAK AROUND WATER PUMP GASKET TO ENGINE CAN NOT STOP
At 70,000 miles head gaskets were replaced also water pump radiator thermostat hoses. At the cost of $3000. This car is the worst car I ever owned. I dislike this car so much will not buy GM (Garbage Motors) as long as I live. GM should change the name of Cadillac div to Nickel & Dime Div.