2017 5.3 engine ticking sound?

Midnight Nightmare 2017 · January 30, 2019

I have a 2017 with a 5.3 engine and 16,000 miles. I cant seem to remember when I bought the truck if it had this ticking sound. It doesn't sound like it's in the valve train. Kinda sounds lower in the engine department? It's not super loud and happens about every second. It doesn't seem to matter if the engine is hot or cold. Happens all the time. Has anyone else experienced this and know what it could be? Thanks

greystone · January 30, 2019

I have heard a similar with mine. I think it is from the air pump.

Lsgun1 · January 30, 2019

My 16 did it since new. Wouldn't worry about it.

sturge33 · January 30, 2019

Mine does the same thing. I've heard a few others that also do it. I've read that it's either a vacuum pump or the sound of the direct fuel injection.

Sierra Dan · January 30, 2019

41 minutes ago, greystone said:

I have heard a similar with mine. I think it is from the air pump.

You mean vacuum pump?

https://www.gm-trucks.com/forums/topic/212773-vacuum-pump-replacementdiagnosis/

HeySkippyDog · January 31, 2019

It's normal.

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DirtyAndy · February 2, 2019

I’ve read that the direct injection is louder. My ‘18 ticks as well.

15 Z71 · February 2, 2019

My 15 has done it since I bought it new. I have 42,000 miles sounds the same 3 years later. Now I will say my friend at work as a 2018 5.3 and it's as quiet as a mouse. Not any ticking sound like mine. I'm not going to worry about it I guess its normal. My other friends 2014 it has a 102,000 on it and his sounds the same as mine. So that's another reason I'm not worried about it.

Largely Unknown · February 3, 2019

Mine is the second direct injection engine I have had, and both have had the same clicking, sewing machine-type sound, not unhealthy sounding, but just there in the background. I'm inclined to believe it's the injectors.

SS502 · February 3, 2019

It is not really annoying until I’m at a drive-thru, but I rarely do that and I don’t give a darn about the toll booth money takers...they are rude as all get out so I hope my noise is irritating to them ?