Q: Ticking sound

asked by on April 11, 2017

Just bought it.1999 chevrolet silverado 1500 5.3 Z71 extended cab LS sportside automatic . No rust.....yes.... Motor has slight tick, not loud. And cant pin point it to either side. Oil is thick and gritty. Unsure if it's metal or crude. Oil pressure is good idle and driving.

My car has 300000 miles.
My car has an automatic transmission.

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