2011 AFM Delete

[otis24]

My son recently purchased a 2011 GMC Sierra with 5.3 V8. Pretty low miles for its age at 140k. He wants to do the AFM delete. What chip/method would you recommend. I see there are items available on Amazon. He wants something of quality that will last. Please advise. Thanks in advance!

 

[JN94]

My son recently purchased a 2011 GMC Sierra with 5.3 V8. Pretty low miles for its age at 140k. He wants to do the AFM delete. What chip/method would you recommend. I see there are items available on Amazon. He wants something of quality that will last. Please advise. Thanks in advance!

Usually an AFM delete consists of a cam and lifter swap. There are OBD2 devices that'll keep the truck in V8 mode but won't make up for design defects.

 

[AZjeff]

A 2011 5.3 with 140k may run 280k with no problem or it may fail at 141k with or without turning it off with a chip or tune. AFM problems are a luck of the draw thing with the parts put in the engine. The 100% sure fix is new parts as noted. @ls1mike did the full AFM delete maybe he can comment. From new the best protection is quality oil and conservative OCIs. Going the chip route won't hurt anything but it's no guarantee, turn it off and cross fingers.

 

[redhat]

Pull the heads, choose what cam you’d like. New LS7 lifters. Plug the VLOM towers with tapered bearings. Use a 4.8 Valley cover. Reassemble. Have PCM calibrated to disable DOD and related DTCs.

Stockish cam will avoid VE or MAF tuning.

 

[I<3oil]

The chip/plug in devices are not deletes, just fyi. All the hardware is still in, it’s just not activating the AFM system.

A delete consists of taking the physical hardware off and replacing it with new hardware that’s not AFM compliant.