I think my 1996 4.3 v8 caprice is air locked
3 Answers
DID Y REPLACE THE RADITOR CAP, IF YES THEN HERE IS HOW YOU REMOVE AIR FROM THE SYSTEM !
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https://www.youtube.com/watch?v=nThsFGa1vuE
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On top of the water pump the thermoset housing theres a brass screw to release halfway and turn on heater n let it run about 20 minutes n you'll see antifreeze comin out and give it gas till you see the meter going down and wait for it that will go down and then tightening back in and i promise you it wont be overheating again