Which tuner to disable AFM?

[Fubar0715]

The cool thing about the BB tune is that the AutoCal v3 handheld tuner stores your stock/OEM tunes, so you can swap back in 5 minutes for warranty/dealer work. Then reinstall the BB tune after you get it back. Just some food for thought.

2nd that - My AutoCal has my factory tune on it and ready at any time. Additionally, my understanding from BBP is that the programing is virtually transparent when in for service.

 

[alpha_omega]

2nd that - My AutoCal has my factory tune on it and ready at any time. Additionally, my understanding from BBP is that the programing is virtually transparent when in for service.

Would the stealership not be able to see that any tuning was done due to the transparency? Would it take some digging or would the trained eye easily be able to see things like trans shifts were adjusted, AFM/DoD was deleted?

I’m asking out of curiosity more so than having the need to worry about a warranty. I’m still hoping GM get slapped with a CAL and is forced to offer the option for a “tune” of sorts with regards to AFM on newer vehicles.

*edit: I live in a state that doesn’t require inspections, so I know for some guys having the option to revert between stock and tune is a “necessity”.

 

[Marky Dissod]

Would the stealership not be able to see that any tuning was done due to the transparency?
Would it take some digging or would the trained eye easily be able to see things like trans shifts were adjusted, AFM/DoD was deleted?

I’m asking out of curiosity more so than having the need to worry about a warranty.
I’m still hoping GM get slapped with a CAL and is forced to offer the option for a “tune” of sorts with regards to AFM on newer vehicles.

*edit: I live in a state that doesn’t require inspections, for some guys having the option to revert between stock and tune is a “necessity”.

No dealership has any access to the ecm / tcm / etc coding, in binary, hex, or any other format (unless equipped with HPTuners / EFI Live / other tuner EDITING software that dealerships so far have NEVER USED because they ONLY use OE 'tunes' that only GM would edit very far from any dealership).

What a dealership may have is access to the 'checksum' and the 'checksum verification number', but both of these are addressed by properly using HPTuners / EFI Live etc.
So, a dealership would see, for example, a vehicle whose V4 mode never turns on, throws no codes, and has expected checksums AND checksum verification numbers, and most likely pay no further mind.
If the vehicle had its tcm 'tuned', it would most likely need to be driven for the tune to be noticed by the test driver's lower back / arse.

 

[BlackBearPerf]

Without going into too much, we use every effort to ensure that there is no trace of the tune using GM's current method of tune identification. To date, there haven't been any issues with warranty on these trucks.

 

[Fubar0715]

The changes, if stock are subtle in my opinion, however I pay attention to the sounds and actions of my truck - primarily looking for anomalies that need/going to need attention. I expect that a GM tech is not going to have that kind of intimate knowledge of how your rig is acting normally.

 

[ECaseyP]

The cool thing about the BB tune is that the AutoCal v3 handheld tuner stores your stock/OEM tunes, so you can swap back in 5 minutes for warranty/dealer work. Then reinstall the BB tune after you get it back. Just some food for thought.

I decided to return the Range and just save the money towards getting a Black Bear tune. One thing I'm not a fan of is the lack of throttle response from time to time. It seems like when you are getting of the interstate and don't have to come to a complete stop, you have to mash the throttle to get it to respond and accelerate; I don't like that at all. Another thing is when approaching a hill in V4, when it goes back to V8 mode it lacks power unless you mash the throttle.

I'm beginning to think there maybe an issue with either the throttle body or the throttle pedal. I'm going to clean the throttle body this weekend and see if it helps. Also I've been looking at getting a catch can for this Tahoe as well.

 

[BlackBearPerf]

That sounds great! Our tune will definitely help improve the throttle response. Cleaning the throttle body is a good idea as well. We would also suggest checking your gas pedal assembly. It may be loose and flexing.

 

[ECaseyP]

That sounds great! Our tune will definitely help improve the throttle response. Cleaning the throttle body is a good idea as well. We would also suggest checking your gas pedal assembly. It may be loose and flexing.

I'll definitely give the pedal a look over. I've been researching it a little and apparently these have a known issue.

 

[Charlie207]

I'll definitely give the pedal a look over. I've been researching it a little and apparently these have a known issue.

It's also worth it to clean your MAF while your cleaning the throttle body. All the autoparts stores sell MAF cleaner in a spray can.

 

[ECaseyP]

It's also worth it to clean your MAF while your cleaning the throttle body. All the autoparts stores sell MAF cleaner in a spray can.

I have both can already at the house. I did this recently to my Avalanche.

 

[me51]

Another thing is when approaching a hill in V4, when it goes back to V8 mode it lacks power unless you mash the throttle.

Sounds completely normal to me when running with AFM enabled. Throttle response is remarkably "cushioned" on these vehicles, and AFM with a half second delay when switching doesn't help either. Best comparison is that the throttle response feels like a newer German car in Eco mode.

The Range adapter noticeably improves the driveability, and with the BTDieselworks OBD splitter cable you can install it completely hidden.

 

[Hashiriya]

You can, but then AFM is active again. 5th gear locks it out due to mapping

You can, but then AFM is active again. 5th gear locks it out due to mapping

Hey btrain can you elaborate on your answer. Sorry new to GM stuff, but I just purchased the hp tuners and I am going to use it to disable the AFM. Thanks in advance

 

[B-train]

Hey btrain can you elaborate on your answer. Sorry new to GM stuff, but I just purchased the hp tuners and I am going to use it to disable the AFM. Thanks in advance

If you don't have a tuner, using manual (M) on the shift column will allow you to use the up/down arrows on the column to select the highest gear you want to be in. Lock it in 5th and AFM won't activate. It works good for around town and highway speeds up to about 65 mph for decent fuel economy still with no V4 mode. You can still run at freeway speeds if you like, but mpg will probably drop.

A tuner is the most economical way to get rid of it and use all 6 gears

 

[Hashiriya]

If you don't have a tuner, using manual (M) on the shift column will allow you to use the up/down arrows on the column to select the highest gear you want to be in. Lock it in 5th and AFM won't activate. It works good for around town and highway speeds up to about 65 mph for decent fuel economy still with no V4 mode. You can still run at freeway speeds if you like, but mpg will probably drop.

A tuner is the most economical way to get rid of it and use all 6 gears

Oh okay sweet so nothing to worry about lol my hp tuners arrived and it was deactivated asap. Drives great and no issues.

 

[RichardCranium]

Oh okay sweet so nothing to worry about lol my hp tuners arrived and it was deactivated asap. Drives great and no issues.

Get into the HPT community and find a simple cleaned up tune for your transmission as well, it will make a tremendous difference in driveability. One of the biggest things my tuner did was remove the converter lock-up at lower speeds, which was almost always a brutal slap in my 6L80.

 

[Ibustbravo]

Hey btrain can you elaborate on your answer. Sorry new to GM stuff, but I just purchased the hp tuners and I am going to use it to disable the AFM. Thanks in advance

I have a solid grasp of this and if you want I can walk you through all of this offline in a teams meeting.

There's a little more to it than just turning off DOD in the ECU. I can also share my logging channels and histograms.

This is the "Wife approved" trans shift template that I put together for my yukon with a fresh 6L80 and fresh engine.

C

 

[Hashiriya]

Get into the HPT community and find a simple cleaned up tune for your transmission as well, it will make a tremendous difference in driveability. One of the biggest things my tuner did was remove the converter lock-up at lower speeds, which was almost always a brutal slap in my 6L80.

Oh damn really? I had no idea but thanks for the heads up. I come from manual trans vehicles lol so autos are new to me.

 

[Hashiriya]

I have a solid grasp of this and if you want I can walk you through all of this offline in a teams meeting.

There's a little more to it than just turning off DOD in the ECU. I can also share my logging channels and histograms.

This is the "Wife approved" trans shift template that I put together for my yukon with a fresh 6L80 and fresh engine.
View attachment 412956

I figured it was too easy to be true haha but yeah man I wouldn’t mind if you shared em, i do have some questions about the way the trans feels at times (nothing bad) just noises here and there that “concern” me.

 

[Ibustbravo]

I figured it was too easy to be true haha but yeah man I wouldn’t mind if you shared em, i do have some questions about the way the trans feels at times (nothing bad) just noises here and there that “concern” me.

I started with my Ford 6.0 diesel, which is a simpler operating system in comparison to this Gen V stuff. I'll send you a PM and see if our schedules sync up.

This is the best Gen V training, bar none--> evansperformanceacademy.vhx.tv