What is your question?
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What is your question?
At 124,219 miles, and literally 1 week after Chevy dealer replacing the GM factory recall of ignition switch, the engine light illuminated once, oil level down, and loud engine knocking/rattle at acceleration started. Chevy dealer says the engine is ready to go (suspect a failed bearing or rod)? No diagnostics, just 'listened' to the engine. What test(s) can be done to narrow this down vice an engine replacement (quoted $5K for a new engine)?
1 Reply
An oil sample can be sent off for analysis to see if bearing material is found in it. Otherwise, you might need to drop the oil pan and check for excessive movement at the crankshaft bearings, both the mains and rods. You can usually watch the crank or rods while turning the crankshaft forward and backward in small increments and watching the bearing to main and bearing to rod areas for movements that are not smooth.