2016 Denali XL - GMC Refused to buyback!

[Illnasty]

The classic term "they don't make 'em like they used to" applies here. But, at least they made it comfortable and look good!

It looks nice but damn sure ain't as comfortable as the 2001-06. My 70 year old mother describes it best, your old truck is like flying in first class and your new one is like business class.

 

[Illnasty]

AFM = Active Fuel Management. The switching between V4 & V8 mode.

Not trying to get political but I'm hoping this new administrations roll back of fuel regulations will make auto makers get rid of the stupid AFM (as I watch environmental protesters marching on Washington). Cant wait for my truck to fall out of warranty so I can tune it.

 

[Glocksub]

Thank you. Is there a certain speed at which that kicks in?

It's not really determined by speed. Generally speaking, if your foot isn't on the accelerator, it's usually in V4 mode. It will also revert to V4 if cruising on relatively flat ground at speed. That has been my experience on the '15 Silverado I had for a short time and my '10 1500 as well. GM claims the transition is seamless and virtually undetectable, but I can tell you that is not the case from the vehicles I've owned and test driven. Utilizing a range device, superchips, hypertech or diablo handheld tuner are the easiest ways to permanently disable AFM. It would be my very first mod if I bought a new SUV.

 

[Glocksub]

Not trying to get political but I'm hoping this new administrations roll back of fuel regulations will make auto makers get rid of the stupid AFM (as I watch environmental protesters marching on Washington). Cant wait for my truck to fall out of warranty so I can tune it.

Agree 100%. AFM is more trouble than it will ever be worth on the GM trucks. From what I understand, drive ability is greatly improved by removing that feature. Based on the way my last GM drove/shifted and generally acted as if something was wrong when going in and out of V4 mode, I personally believe disabling it is worthwhile, regardless of any mpg impact.

 

[EzSkAnKeN]

It's not really determined by speed. Generally speaking, if your foot isn't on the accelerator, it's usually in V4 mode. It will also revert to V4 if cruising on relatively flat ground at speed. That has been my experience on the '15 Silverado I had for a short time and my '10 1500 as well. GM claims the transition is seamless and virtually undetectable, but I can tell you that is not the case from the vehicles I've owned and test driven. Utilizing a range device, superchips, hypertech or diablo handheld tuner are the easiest ways to permanently disable AFM. It would be my very first mod if I bought a new SUV.

Thank you. I have been in touch with Blackbear already. Wanting to throw on a AFE intake (most gains from their testing of multiple intakes) and a cat back exhaust before I start logging data for the tune. I already have their AutoCal is why.

 

[cardude2000]

It looks nice but damn sure ain't as comfortable as the 2001-06. My 70 year old mother describes it best, your old truck is like flying in first class and your new one is like business class.

The seats you mean?

 

[cardude2000]

Not trying to get political but I'm hoping this new administrations roll back of fuel regulations will make auto makers get rid of the stupid AFM (as I watch environmental protesters marching on Washington). Cant wait for my truck to fall out of warranty so I can tune it.

I think that regardless of any particular administration's love for/hatred of the planet afm won't be going anywhere.

Being able to show a couple of additional miles per gallon on the window sticker is way too important for car manufacturers. Might not seem like it right now but the minute gas prices jump up it becomes massively important. .




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[2011SSVHOE]

I've worked with multiple dealers and a gm engineer who admitted there's a huge issue with these trucks.

Maybe it's time to get some new engineers, not the one's that you get cheap when you graduate at the bottom of your class. just my 2 cents worth

oh yeah you might have to pay them more than 12 bucks an hour!!

 

[Illnasty]

The seats you mean?

Yea, just the seat. Look of the newer interior is really nice

 

[east302]

Is this just the current generation models that are having this issue? No similar issues reported with the 2007-14?

Looking to replace an 04 Yukon XL soon, but don't want a (literal) headache.


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