Lv3 and afm

[WranglerMike]

On my 2014 lv3 4.6ltr. I apparently have the afm dropping from 6 to 4 cyl.Most vehicales put there that have this afm system have either a button or an indicator somwhere that lets you know when afm is active.My truck I had no clue it has it as it has no indicators telling the operatoor its in afm.Should it be dropping 2 cyl at cruising speed? I have been told it drops 2 at idle but not 100% sure.

It is a 2014 silverado wt with a 6cyl lv3 engine.Anyone have the same truck/engine with afm.

(I am actually quite impressed with the 6 cyl in this ext cab 5.6 box.)It has hauled many dodges.

 

 

[Grumpy Bear]

I have the 2015 WT with the LV3 and 6L80E. 282 K kilometers of trouble-free AFM operation. No, it does not drop cylinders at idle. It is a load-based system with a time limit. Yes, at road speed IF the load is small enough. Most effective between 65 and 100 kph. 

 

If you have the WT too then there isn't a DIC display for it, but you can watch it by using Linear Logic's Scan Gauge II or III or Torque Pro. HP Tunner or the like. I use the Scan-Gauge II system. 

[WranglerMike]

Thanks for the reply.Good to know.

Never had any issues with the AFM but just wanted some insight on it.Was never surr if mine had it at all until i had a oil pump put in by a buddy this week.

The only issue I have had is the oil pump.2nd engine(First pump took out the engine then GM raplaced) 3rd oil pump with 183000 on the truck

 

Edited October 3, 2023 by WranglerMike
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