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Discussion Starter · #1 ·
I Am going to be going to look at a '97 seville sls next week and have a couple of questions. First off is how can I check to see if the coolant system maitnace has been done? I was told by a few people to simply call GM with the vin# and if the service was done at any GM dealer that they would have it on file,is this true? Also are there any trouble spots to look out for in these cars,and where do I look for any oil/fluid leaks on these cars?
 

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True. IF, the service were done by a GM dealer, they would have a record of it, as well as any other maintanence or repairs performed. Other than that, you must rely on the sellers receipts, if he has any or his word.

One big leak point was the halfcase seal. See if the pan is wet. My '97 developed the leak and was fixed under warranty and was bone dry when I sold it two weeks ago at 107K. BTW, halfcase seal is nothing more than seapage and not a big problem.

Also be sure the fuel rail recall has been done. If not, get it done.
 

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Discussion Starter · #4 ·
Thanks ranger will they charge me for the repair,what am I looking for and where is it? Also is there anyway to check for any head gasket issues like smoke coming from the tail pipe or any other syptoms? The car has 94,000 miles if this matters at all? Last thing is is there any truth to the headbolt issue on the N* engines? If so what happens if they come lose?
 

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Fuel rail replacement is free. Remove the silver beauty cover and look at the fuel rail. If it is black plastic it is original. If it is stainless steel, it has been replaced.

The biggest symptom of a bad head gasket is overheating, coolant usage and/or coolant overflow.

If the head bolt threads pull, the head gasket will fail. I think that is rather rare though. Head bolt threads will usually pull on removal or replacement. That is why it is recommended to Timesert them anytime they are removed as aprecausion.

Just be sure the coolant was changed as required. That is the best prevention against head gasket failure, though not a guarantee.
 
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