2014 Yukon 6.2L lifter noise

[donjetman]

I installed a Precision brand # 4646 ($218) rebuilt TC in our Denali w/6L80 4+ yrs and 56k miles ago. Works great.
https://gopnh.com/Torque-Converter-Specifications?AID=2574

 

[mike singleton]

I was finally able to get a video sound clip what my engine with the ticking noise. I have a 2014 Yukon XL Denali with the 6.2. It has about 115k on the Yukon. It doesn't get driven but maybe once or twice a week. Normal oil change intervals with the oil life reminder helping out.

This sure sounds like a collapsed Lifter and/or a wiped CAM. With the AFM, these engines (both the 6.2 and the 5.3) really like Full synthetic oil and regular oil changes. When it drops from 8 to 4 cyl mode, with old conventional dirty oil, it's my understanding that they are very susceptible to wiping camshafts. Many of the GM dealerships are using full synthetic only (no blends) and that's all I would ever use in our Yukons and Suburban.

 

[theJime]

I did all oil changes at dealer until out of warranty. Then only used mobile 1 full synthetic.

 

[theJime]

I been gathering my parts for the rebuild. Picked up some lifters and 1 of the 16 looks odd. I am returning but wanted to get an opinion from this group. Would you use this lifter?

 

[Dustin Jackson]

Looks about right to me, maybe take pictures compared to others

 

[theJime]

Comparison photo. 15 look like the bottom lifter and then the 1 discolored lifter. Just not looking to have an issue after getting the engine put back together. I’ve seen a couple of builds go wrong from bad replacement parts.

Also, I reached out and a replacement lifter is on its way.

 

[Dustin Jackson]

Does look weird, I don’t blame you for playing it safe

 

[Geotrash]

Comparison photo. 15 look like the bottom lifter and then the 1 discolored lifter. Just not looking to have an issue after getting the engine put back together. I’ve seen a couple of builds go wrong from bad replacement parts.

Also, I reached out and a replacement lifter is on its way. View attachment 400226

Looks like the Steel got hot during the machining process. Perhaps their grinding machine ran out of cutting oil.

 

[moman406]

Yup gonna need to have that fixed

Had to replace me son's engine at 126K. Lifters failed and sounds like yours. Crankcase was full of metal. No hope of just replacing lifers.

 

[Dustin Jackson]

Had to replace me son's engine at 126K. Lifters failed and sounds like yours. Crankcase was full of metal. No hope of just replacing lifers.

That sounds like worse case lifter failure. This is why I recommend opening the motor and inspecting it before people go ordering parts before they find the extent of the damage