2016 , 5.3L suburban engine clicking/ticking sound

[Mike Lindell]

Both my tahoe and suburban did this from the factory as does my father's. Years of doing it without issues.

 

[Gmfm]

This exactly! I chased this for quite a while. Put a stethoscope on the fuel line on the drivers side where it bends to go under the intake manifold to HPFP... you'll hear the tick plan as day. You can probably even lie under the truck where the fuel lines come off the front part of the tank and see the line pulsing. Similar to @Gmfm, I replaced my HPFP and the tick is now gone. I never had any issues aside of the audible tick. One point to note, when I took the old pump out the spring pretty much fell off so I'm guessing that was the reason for the tick.

If you check that and determine that's it, I have a brand new factory HPFP I've listed in the for sale section if you're interested. Long story short, I'm an idiot and ordered it not remembering I just ordered one the day before.

Did you have to buy the special”tool” that lets you know the engine is a tdc or did you use another method?

 

[WingsAA]

Did you have to buy the special”tool” that lets you know the engine is a tdc or did you use another method?

I bought the tool. https://smile.amazon.com/dp/B07CVKYHVY/ref=cm_sw_r_cp_apa_fabc_Mh14Fb54NT014?_encoding=UTF8&psc=1

Funny enough however, when I put the tool in I was at tdc... go figure. I wouldn't have been that lucky if I hadn't bought the tool. Lol

Sent from my SM-G988U1 using Tapatalk

 

[2017_Tahoe]

My 2017 Tahoe premier makes the SAME exact sound. I have 75,000 miles on it. It didn’t always make that sound by the way. It kind of drives me crazy but at this point I’m ready to get rid of it with all these different funky noises. On cold starts in the morning there’s a rattle underneath that goes away after 45 seconds or so, and I have the ticking noise I can hear on the driver side getting onto the freeway. I can hear that more so when the RPMs are lower. None of these noises were there when this was purchased a brand new