Could your struts or top hats be loose? Maybe a bad suspension bushing? You’ll have to have someone take a look at it and replicate the issue at a shop or something.

Thank you
Riyaz

Kimberli,

If your truck starts easily in any weather, whether it is cold or has been driven recently, idles smoothly in gear, accelerates normally, and will cruise comfortably at highway speed, do not worry. Have your oil and filter changed immediately, and from now on, have the oil and filter changed every three thousand miles. Millions of Chevrolet engines make light tapping sounds for years without any damage to the engine or reliability. An actual mechanic in your area will perform a “vacuum test” and ensure that your oil pressure is normal. This mechanic can determine most issues with your car, within ten minutes, to include a short test drive. Now remember if your oil pressure light comes on, pull over and listen to your engine idling, then drive to an actual service station and get them to check and add oil if required.

I don’t know. I’ve heard that too but never tried it myself.

I don’t know. You could try picking up an automotive borescope, doing a compression test, doing a leak down test, or sending some oil into a company like Blackstone for a used oil analysis. Those four things should give you a much better idea about the state of your engine.