Why does my Vortec 6000 make a knocking noise?

If you get a check engine light and codes for engine knock on your 6.0L vortec, it could be actual engine knock. However, if you do not hear any knocking noises but do have a CEL, you likely have a bad knock sensor. On the 6.0 engine, the knock sensor has a pretty crappy sealant on it which can cause water to enter the sensor.

When does a noisy lifter start the engine?

Depending upon the type of noise and it’s span, we can decide how serious the noisy lifter is. Usually, the noisy lifters produce some sort of tapping noise during the first few seconds after the starting of the engine.

Why does my Chevy Silverado make a knocking noise?

65 people found this helpful. for a piston slap you need to pull apart the motor and possibly either re-bore the cylinder with the bad piston or replace the entire block be cause of the damage done to the piston and the cylinder as the piston “slapped” against the walls of the cylinder most likely gouging the cylinder walls

Where is the knock sensor on a Chevy 6.0?

In Chevy 6.0 engines the knock sensor sits underneath the intake manifold in the lifter section. The sensor is responsible for measuring engine vibrations and detecting if there are any unusual vibrations, aka if any “engine knock” is occurring. Engine knock happens when a gasoline burns unevenly in a cylinder.

What does a GM 6.0 liter knock sound like?

At about 9000 miles, it developed a knock (sounded like a lifter) when cold. The dealer did a GM-recommended “decarbon treatment” which did no good. The truck now has 15,000 miles and the knock is getting worse – even happens some when the engine is warm.

Is the noise from the lifter harmful to the engine?

The lifter noise may vary from a few seconds after the start of the engine to as long as the engine runs. Anyways this is harmful to your engine if you don’t care of it in initial stages. Let’s quickly go through what causes the noises from lifter can do and to what extent they can be harmful.

Why does my Chevy Silverado knock all the time?

It will also knock after the truck has been sitting for a half an hour, so it is not really a cold engine knock. I have about 6,700 miles on this engine and this is the second engine in my 2000 Silverado. GM replaced the original engine at 15,900 miles for the same reasons (knocking and tapping).

Is the 6.0 liter engine knocking on cold starts?

The engine has been knocking on cold starts and warm re starts since day 1. The service manager says he knows what it might be, but mums the word until he talks to or Em-ails his district re. They de-carbed the engine (yes at 2800 miles) it runs O.K. except for some low gear, light throttle engine skip.