Any lifter failures in 5.3 without DFM

[thekcwolf]

On 1/19/2022 at 8:55 AM, WeGone said:

So if you had a build date of 3/21/21 you would be in the (bad lifter range)I would guess the motor was built at least a few weeks+  before build date?

 

Update:  So my engine build date is Feb 25 21

 

 

 

Hey Now !!       @WeGone Where is this Decal/Label/Sticker located? It doesn't look to difficult to see from "open hood" view. Interesting to see when looking at a new vehicle that's on the lot.

Thanks !

[newdude]

On 1/26/2022 at 2:14 PM, voided3 said:

The 2021 model year was the last for the L82 AFM version of the 5.3, as well as the 4.3 V6 with AFM. The 2022 LTDs and 2022 refresh models won't have those, only the DFM L84 5.3. The currently-available 2.7 turbo I-4 has a different variant of AFM that shuts off two of the four cylinders, though.

 

 

Indeed.  Pretty trick setup too with the Sliding Cam Valve Lift System

 

New Turbocharged 2.7L 4-Cylinder Engine Powers Full-Size Trucks – TechLink (gm-techlink.com)

[WeGone]

1 hour ago, thekcwolf said:

 

 

Hey Now !!       @WeGone Where is this Decal/Label/Sticker located? It doesn't look to difficult to see from "open hood" view. Interesting to see when looking at a new vehicle that's on the lot.

Thanks !

 Back of driver side head. I got under the truck you can see it, stuck my phone and bingo...Credit goes to who posted on were it was.  I read a post here somewhere on how to find it.

[thekcwolf]

Ok, Got my AT4. Got under there and got an image of that decal on the engine. I have been everywhere to try and "decode" the thing.   Which one of these numbers represents the "julian" date? It's probably right in front of my eyes.

Help is greatly appreciated.

Thanks!

 

L84

210360788        CU7

12685254   002127157   1110000000000X

T1210361CU7X0788

 

EDIT:   Found a Julian Date Converter that jives. Also discovered these tidbits.

*I read somewhere the T1 at the start of that code was designation for the newer body style.

"T1 Platform" which replaced the "K2 Platform".

T= Assembly Plant code. Which i assume is Ft. Wayne in this case.

      (I thought Ft. Wayne was a "Z" in the VIN.)

1= "First Shift"

21036= Year(2021) - Day of year(36th)... so (Feb. 5, 2021)

The rest, although I am interested to learn about, is sequence codes (according to the other post).

 

Hopefully the "Valve Lifter Service Update #N212353840" was performed prior to delivery.

 

Cheers,

Tony

Edited March 3, 2022 by thekcwolf
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