Head gasket on GMC jimmy

Asked by Apr 18, 2017 at 05:11 PM about the 1997 GMC Jimmy 4 Dr SLE 4WD SUV

Question type: Maintenance & Repair

Has 160,000 miles & runs great. I'm not a
mechanic- is there any way to know if the
head gasket is ok- or already replaced- or
ready to blow? I want to sell & that ? came
up. Can you help me?

2 Answers

75,535

You would need some service records to prove if the head gasket had ben replaced, otherwise one would not know. The best thing to do is to do a engine compression test and verify the cylinders compression. If there where a blown head gasket, cylinder compression would show low between some cylinders. There would be white smoke coming out the exhaust with a sweet smell, or the engine oil level would have coolant in it.

Engine- well I know it has one! But I'm afraid I can't tell you anymore. I did have a near blowup & replaced the manifold w/ both upper & lower intake gaskets, thermostat & serpentine belt. No more coolant leaks or overheating now. Thanks both of you.

Your Answer

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