AnnivSS

Good Morning all. So it seems I am finding a bit of conflicting information on the interwebs but it seems as if the aluminum 5.3L I pulled from my parents wrecked 05 GMC Envoy Denali (VIN M) is an LH6. However everything I can find says that should be an AFM engine. That vehicle for 100% fact did not have AFM. I did find a few blurbs (nothing Id take as a statement of fact) that they "had" AFM in 05 but it wasn't wired up. Am I still going to need an AFM delete kit for this engine?

Bspeck82

https://media.gm.com/dam/Media/docum...2005Envoy.html

AnnivSS

Ok so the short wheelbase models did not have AFM. Awesome. Thank you.

G Atsma

It wasn't activated on the SWB models. All LH6's had the capability. So you still might need the DOD delete kit.

AnnivSS

So I suppose at this point the only way to be sure if to pop the valve covers off and check to see if it has the 4 oddball rockers?

G Atsma

Rockers are all the same. 2 different lifters on AFM/DOD engines.

64post

iTrader: (5)

If it has a valve body for a Valley cover or oil towers in the valley that are drilled, you probably need some kind of delete.

AnnivSS

I havent removed the valley cover yet but I seem to remember the top side of it looking the same as the one I pulled off my LM7.

64post

iTrader: (5)

You would know by looking at the top of the Valley cover, it’s not smooth but looks like a transmission valve body.