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A couple of tests you can do to help determine what is happening. Head gasket: Compression test. minimum 120 psi, should all be within ~10% Oil and coolant are mixed. Check oil and coolant. Exhaust smells like coolant or burning oil. Might smoke excessively Bubbling in the radiator while running. Check plugs for oil/coolant. Cooling System: First, fix ...


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This is a bit difficult to diagnose over the internet, but it sounds like you have a coolant circulation problem as well as a pretty bad oil leak. I would take it to GMC or Chevrolet and pay them to diagnose it. It only costs $100.00. A skilled tech can tell you exactly whats wrong with it and how to go about fixing it. If it's a head gasket (Which it sounds ...



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