2013 Yukon Denali Hybrid AFM Delete won't pass emissions

j91z28d1 · Wednesday at 7:26 PM

tell the tuner if he's using hpt tuners to license the tune, and then change the drop down box for afm from whatever it is to what it's not now.. reflash the truck and go test drive it. what is in the box doesn't matter, just change it to the other thing. depending on the version of hptuners he has on his laptop, some have reportered it as labeled incorrectly at first and fixed in later updates. as in sometimes the factory tune shows disabled(while it's actually working) for other people it shows enabled. it doesn't matter, just change it to the other one and save. it will disable it.

good luck.

everyone sees hybrid and freaks out. its annoying

HybridYukon13 · 2024-11-16T18:27:50-0500

j91z28d1 said:
hptuners will disable afm and all monitors will set.

I have done it on my 2011. so don't listen to anyone that says a hybrid can't be done.

worse case you buy hptuners, 2 credits. change one drop down box and then sell hpt if you don't need it. or find a local that has it and willing to do it for you.

curious thou, did you change the cam or just drop in 16 new non afm lifters on top of the old cam? did you replace the vlom with a non afm flat one? I only ask cause usually guys that try dropping in new lifter on the afm cam have a missfire and guys that do a delete kit which is cam, lifter and top plate. the truck runs like crap with just dongle turning it off.

Hi! I found a local guy who tuned it and all is perfect now!

We did not change the cam and we did put non afm lifters on it.
Ive been driving it for about 1.5 years with zero issues.
My gas mileage has gone down about 2mpg but other than that its just fine.
The lifter collapsed with about 87,000 miles on it and In just about to turn 100,000.

Marky Dissod · 2024-11-16T18:41:06-0500

HybridYukon13 said:
Hi! I found a local guy who tuned it and all is perfect now!

We did not change the cam and we did put non afm lifters on it.
Ive been driving it for about 1.5 years with zero issues.
My gas mileage has gone down about 2mpg but other than that its just fine.
The lifter collapsed with about 87,000 miles on it and In just about to turn 100,000.

Is your tuner's secret sauce so secret,
that not only will you not give us any clue what your tuner did,
but you also won't tell us his (business) name?

j91z28d1 · 2024-11-16T19:14:35-0500

HybridYukon13 said:
Hi! I found a local guy who tuned it and all is perfect now!

We did not change the cam and we did put non afm lifters on it.
Ive been driving it for about 1.5 years with zero issues.
My gas mileage has gone down about 2mpg but other than that its just fine.
The lifter collapsed with about 87,000 miles on it and In just about to turn 100,000.

that's awesome. there's been a few people try putting non afm lifters on a afm cam and they seem to always have bad results. like missing and running badly. that's awesome that it worked for you.

thanks for the update.

now I have even more questions lol. I wonder if the hybrid cam being different grind allows for the lifter change on the oem cam. huh.

2013 Yukon Denali Hybrid AFM Delete won't pass emissions

j91z28d1

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HybridYukon13

TYF Newbie

Marky Dissod

Full Access Member

j91z28d1

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