Radiator Problems of Cadillac Seville

The contact owns a 1998 Cadillac Seville. While driving 60 mph, the temperature warning indicator illuminated and the contact stated that the motor began to overheat. As a result, the contact pulled over to allow the engine to cool. The vehicle was taken to a dealer where it was diagnosed that the radiator needed to be flushed, and the water pump and thermostat needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle was taken to the dealer again where it was diagnosed that the head bolts were not long enough. As a result, it caused the pressure to lead through the head. The manufacturer was notified of the failure and referred the contact to NHTSA. The failure mileage was 102,000.

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We have a 1998 Cadillac sts and are running into problems with it running hot. After replacing the radiator, thermostat and coolant, there is still the same problem. It will only be after the engine is warmed from driving will this occur, it will start to run hot if you give the vehicle gas to try and get into traffic flow. We have consulted quite a few machanics on this problem and they have all given us the same explanation for the presumed problem. Especially one that use to work directly for Cadillac as a mechanic, they state there is a problem with the steel bolts in the aluminum engine and if there is any type of sudden exceleration then the engine will run hot or overheat. This is a known common problem stated by any mechanic that knows about this type vehicle, especially when they are telling us this happens all the time to Cadillacs. We have not replaced anything yet but have been advised this would be a very expensive job to do, and we were advised the problem will get so bad in the near future the repairs will have to be performed to even drive the vehicle.