5.3 lifter tick?

[George Owens]

Hey, I believe I have the infamous lifter tick, there’s no codes and the 08 Tahoe LT seems to run like normal. One of the spark plug wire seemed loose as I saw it wiggle while idling. I went to push it in and I felt the tick through the spark plug wire. You can hear it too. My question is what are the parts/tools needed to do this job? Also do I need to change the AFM lifters or all of them? I’m kinda on a budget so I only want to replace what is necessary thanks in advance

 

[iamdub]

Tools:
Metric sockets
Nut driver (5/16", I think)
Pliers and/or channel locks
Protractor or torque angle gauge

Parts:
New lifters
New lifter trays
Head gaskets
Intake manifold gaskets
Head bolts
Coolant crossover and block-off gaskets (O-rings)


You can replace just the AFM lifters. There's a newer design that's supposed to be more reliable than what originally came in your '08 LMG. If it hasn't been updated, replace the VLOM with the newer design as a great preventative measure since you'll have it torn down to that point.

 

[pwtr02ss]

^what he said

 

[1BADI5]

Yeah you can, but its recommended to replace them all since you're going through the labor of removing the cylinder heads.

What cylinder has been diagnosed with the lifter tick?

 

[George Owens]

hard to tell I didn’t take it apart yet, but I do kinda hear ticking on both sides

Yeah you can, but its recommended to replace them all since you're going through the labor of removing the cylinder heads.

What cylinder has been diagnosed with the lifter tick?

 

[tom3]

Loose spark plug?

 

[George Owens]

Loose spark plug?

haven’t thought of that, wouldn’t there be some sort of misfire? There is one spark plug wire that slightly moves and when I go to push it in I can actually feel the tap

 

[George Owens]

Loose spark plug?

Ok so you called it. The spark plug was lose, i tightened it now the plug isn’t wiggling....I don’t think I hear the tick anymore either

 

[Just Fishing]

Fixing mine now...


If lifter tick, then that piece that's in the garbage can there.
Is the Vlom.
My bolts were loose.
Check yours.
I could remove the bolts with my fingers....

I already had the parts ordered, so I'm doing a full delete and didn't try tightening the bolts to see if it fixed it.
It requires removal of the intake in order to get to the valley cover/vlom thingy's bolts.


Otherwise, it's lifters and cam.
Or just replace the offending DOD/AFM lifters.

For full cam,
while your in there, might as well do the oil pump and timing chain.