Dear NHTSA, Cadillac GM shipped the northstar engine with a known head gasket issue involving the threading and the shortness of the headbolts, when the the coolant flows through the engine, the heat of the coolant going thru the head gaskets rips and shreds the headbolts causing a failing head gasket, when the threading on the headbolts starts to shred apart from heat, the head gasket cannot hold causing overheating causing the head gasket to blow, GM knowingly shipped all northstar engines with this problem and still has not recalled it, the models affected by this awful problem 1992-2002 Cadillac Seville sts/sls 1992-2002 Cadillac elderado ESC/etc 1992-2002 Cadillac Deville. This issue has caused these vehicles to be sent to the grave and has costed many Cadillac owners including myself thousands of dollars in repairs, these cars would leave the lot with that issue and blow there heads within 40,000 miles, GM purposely manufactured these cars like that because the cost to repair is almost 5,000 dollars, they manufactured multiple models with this issue, how have you not recalled these vehicles! fix this! how could they do this to us? they ripped us off 10 years and didn't manufacture a fix until 2005,

- Corning, CA, USA

Engine turns off for no reason while going under 40 miles. Have to put it in neutral and it will start right up again. Usually on city streets, in motion. We think most of the time after turning.

- Jackson, CA, USA

The contact owns a 2000 Cadillac Eldorado. While driving at approximately 65 mph, the check engine warning light illuminated. In addition, the contact felt a burning sensation on his right foot and noticed that an unknown hot liquid was leaking onto the accelerator and brake pedals. The temperature gauge indicated that the vehicle was overheating. The contact was able to pull the vehicle to the side of the road and, in the process, sustained serious injuries that required medical attention. The vehicle was towed to the contact's residence. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was unknown.

- Whittier, CA, USA

The car has been overheating since 83600 miles. We changed the thermostat and it still did the same thing. Took to Cadillac dealer and they said there was nothing wrong. Went got the car and paid price 3 days later it was overheating and antifreeze was disappearing. Filled the radiator up with antifreeze and it disappeared again. We changed the lower radiator hose and flushed the radiator and tried it again. The coolant disappeared again and no sign of a leak. Where is the antifreeze going. I was told it was the head gasket or the intake manifold gasket. I am unemployed and do not have the money to have this done. I can not find work without a vehicle. I just bought this car at 75000 miles. This car ran like a charm until I took it in for an oil change at the Cadillac dealer and they put the wrong oil in the engine. By the way this engine is the northstar engine. The mileage now is at 84000 miles. All Cadillac dealers I have taken my car to previously have always used mobile oil. They were trying to tell me this other oil is the same. Obviously this was not the same. It wrecked my car and now I can not afford to fix it. This car has the years on it but not the miles for the years. Why should you have to tear an engine apart with this low of miles on it. Cars are to last to 250,000 miles well this one has not even made it to 100,000 miles. I would really like some help getting this vehicle fixed. If this is the way Cadillac's are I will never buy another Cadillac in my life.

- Albert Lea, MN, USA