Jeffdylanproctor
TYF Newbie
- Joined
- Jun 9, 2025
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I'm sure there are knowledgeable people out there regarding the GMT900 platform and I would appreciate some advice.
To start, I have a 2004 Escalade 6.0 and much experience with the GMT800 platform, and thus have hitherto avoided the GMT900 trucks because I didn't want to deal with the AFM/DOD system. I got married and wanting to continue being debt free, my wife let me pay cash for her to have a truck of her own, and she found this 2011 Escalade 6.2 she really wanted. The seller told me it had been recently AFM/ DOD deleted so I bought it. It has the smooth valley cover along with other indications of the work being done so I trusted the people that it was so.
The 2011 Escalade 6.2 runs decent most of the time, but has problems losing power when at a light cruise, feeling like it is choked and "surging," being much weaker than my 2004 with the 6.0. The issue doesn't always appear, and it is much more common under my wife's driving habits than mine.
It has an enjoyable exhaust on it, and it never sounds like a truck in the AFM/ DOD mode, it just feels a little starved for fuel.
The truck has a lot of power when it has it, it idles just fine and if you drive aggressively it will never have a hiccup; but if you ever let it slip into a moment of weakness, it gets really weak.
If you pull out from a "rolling stop" or are in town in traffic, it feels like it is in overdrive but wont come out, with something of a "surging" feel. Using the manual shift mode helps, but not a lot. The problem is very obvious if you're trying to pull up a hill while it is behaving choked like this. It will be like this for several seconds until you force it to wake itself up. Again, it's more like it "surges" back to life than kicking itself awake.
It shows a P0011 Code most of the time, but not always.
I wonder if they did not properly finish the AFM/ DOD delete with a tune? Does anyone know where to start looking for what is causing the problem of power loss?
To start, I have a 2004 Escalade 6.0 and much experience with the GMT800 platform, and thus have hitherto avoided the GMT900 trucks because I didn't want to deal with the AFM/DOD system. I got married and wanting to continue being debt free, my wife let me pay cash for her to have a truck of her own, and she found this 2011 Escalade 6.2 she really wanted. The seller told me it had been recently AFM/ DOD deleted so I bought it. It has the smooth valley cover along with other indications of the work being done so I trusted the people that it was so.
The 2011 Escalade 6.2 runs decent most of the time, but has problems losing power when at a light cruise, feeling like it is choked and "surging," being much weaker than my 2004 with the 6.0. The issue doesn't always appear, and it is much more common under my wife's driving habits than mine.
It has an enjoyable exhaust on it, and it never sounds like a truck in the AFM/ DOD mode, it just feels a little starved for fuel.
The truck has a lot of power when it has it, it idles just fine and if you drive aggressively it will never have a hiccup; but if you ever let it slip into a moment of weakness, it gets really weak.
If you pull out from a "rolling stop" or are in town in traffic, it feels like it is in overdrive but wont come out, with something of a "surging" feel. Using the manual shift mode helps, but not a lot. The problem is very obvious if you're trying to pull up a hill while it is behaving choked like this. It will be like this for several seconds until you force it to wake itself up. Again, it's more like it "surges" back to life than kicking itself awake.
It shows a P0011 Code most of the time, but not always.
I wonder if they did not properly finish the AFM/ DOD delete with a tune? Does anyone know where to start looking for what is causing the problem of power loss?
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