GM detecting tunes?

[dubious]

Please read this TSB:
http://www.duramaxdiesels.com/forum/showthread.php?t=8669

Quote:If a vehicle comes in for service for a driveability/powertrain concern as a result of a Power-Up Kit installation, the dealership technician now can read the last 10 engine calibration part numbers and CVN history using a Tech 2®.
The dealership technician would input each ECM calibration part number into the SPS/TIS2WEB CVN database to confirm the CVN history information. Refer to Tech 2® path table in this bulletin to verify ECM calibration.2007-2009 LMM Tech 2 Powertrain Output Controls Path Table for NON-GM ECM Calibration


does this TSB state that they can tell you had a tune in it even if you put the stock tune back in?

I have had alot of trans problems, with no luck from the dealer, and finally resorted to doing things myself, after weeks of it sitting at the dealer
I used my efi live to try and manipulate my TCM, as it wouldn't shift into 6th gear until 2500 rpm in 5th, even at part throttle...
I put the stock TCM tune back in.

Can they tell I had flashed it, even if the stock tune is back in it?

What about the ECM?

Thanks

also :

http://www.duramaxdiesels.com/forum/showthread.php?t=16006

They have a nw TSB telling the dealers not to warrant diagnosis time to drivability issues with trucks having tires other than the stock size.
My beef with this is they can blame any irrelevant TCM or TC issue on my tires?
WTF???????

 

[duratothemax]

They can blame anything on whatever they want.

If you have a problem with GM voiding a warranty/blaming a problem on something aftermarket, than thats ridiculous. GM designed the truck to work properly from the factory with all factory parts. If you change some of those parts and the truck stops working, how is that supposed to be GM's problem????

you play, you pay.

ben

 

[8100 Power]

For bigger tires, Don't worry about it. If your truck can't handle bigger tires than somethings wrong.

 

[RKTMech]

Please read this TSB:
http://www.duramaxdiesels.com/forum/showthread.php?t=8669

Quote:If a vehicle comes in for service for a driveability/powertrain concern as a result of a Power-Up Kit installation, the dealership technician now can read the last 10 engine calibration part numbers and CVN history using a Tech 2®.
The dealership technician would input each ECM calibration part number into the SPS/TIS2WEB CVN database to confirm the CVN history information. Refer to Tech 2® path table in this bulletin to verify ECM calibration.2007-2009 LMM Tech 2 Powertrain Output Controls Path Table for NON-GM ECM Calibration


does this TSB state that they can tell you had a tune in it even if you put the stock tune back in?

I have had alot of trans problems, with no luck from the dealer, and finally resorted to doing things myself, after weeks of it sitting at the dealer
I used my efi live to try and manipulate my TCM, as it wouldn't shift into 6th gear until 2500 rpm in 5th, even at part throttle...
I put the stock TCM tune back in.

Can they tell I had flashed it, even if the stock tune is back in it?

What about the ECM?

Thanks

also :

http://www.duramaxdiesels.com/forum/showthread.php?t=16006

They have a nw TSB telling the dealers not to warrant diagnosis time to drivability issues with trucks having tires other than the stock size.
My beef with this is they can blame any irrelevant TCM or TC issue on my tires?
WTF???????

GM is not F@#$ing around any more, so everyone who cares about their warranty take note. Like aftermarket warranty companies have done for years any modification to the vehicle is taken into consideration as an affect of any concern. And I mean EVERYTHING!!!! If you modify you must be ready to possibly pay, period!

As for the poster, Did you return your truck completely back to stock (tires, suspension,and all) and still have problems? or did the problems show up after modification?.......If you have a dealer who cant fix a legitimate problem with your truck why not try to find another one, go talk to the tech who's looking at your truck, see if he sounds like he knows what he's talking about. Dealers are like hookers, If you dont like what you see or what it cost there's another around the corner.:thumb:

 

[dubious]

haha,
Yes I agree, move on when not satisfied.

I couldn't return it to stock, nor do I intend to, wit the lift kit and tires.
I do not own any of those stock parts any longer. :/

no I am not expecting GM to look after my balljoints or tie rods since the lift and wheels, but to completely discredit me and refuse to look at a TCM that has not seemed to work proper since they flashed it, and blame the tires that have been on it since way before the reflash, thats not right.

I have had TCM / transmission issues that are irellevant to the tire size.

All I ever wanted was them to check the TCM, and ensure it will not burn up my built trans I intend to put in the truck asap.
______
??????
anyway, can anyone tell me if they know when the ECM and TCM have been flashed, even after its been put back to stock?

Thanks guys!
______

 

[TeaBagger2006]

the can. they look at the torque input on the tcm and like you posted ,the previous flashes done to the ecm. so if anything is out of he norm, bye bye warranty

 

[Burn Down]

I understand your frustration, but when a company is on the ropes finacially they are going to do what ever they can to save a buck....Even if it cost them customers in the future.

 

[dubious]

haha, even if it costs them customer fordever!

ok so what will a TCM cost? and can i plug it straight in, or do I have to rely on GM to program it, and their great service again?

 

[duramaxdiesel]

Best thing to do is get a spare ECM with a stock tune that's never been raped and use that when you bring in the truck for service.

Nick

 

[Mike_S]

GM can only tell if non-certified calibrations have been flashed into the truck. If you only ever flash in stock calibrations then the tech will never know it wasn't another dealership that did the flash.

Read here:
http://forum.efilive.com/showthread.php?t=8471

This will explain in detail, assuming that you have some basic understanding of the ECM/TCM/BCM and the lanuage they speak to eachother, why they can see any non-stock calibration that is flashed into the system. And no, you can't flash in the stock calibration 5 times to erase the history cause it only records the change if it is different from the last stored calibration. So all of the hub bub about loking at the ECM/TCM and seeing requested torque higher than normal is just that, hub bub. The technition is only going to compare the CVN's from your drivetrain control modules to a list of numbers known to be approved and if they don't match then its warranty out the window.

 

[dubious]

GM can only tell if non-certified calibrations have been flashed into the truck. If you only ever flash in stock calibrations then the tech will never know it wasn't another dealership that did the flash.

Read here:
http://forum.efilive.com/showthread.php?t=8471

This will explain in detail, assuming that you have some basic understanding of the ECM/TCM/BCM and the lanuage they speak to eachother, why they can see any non-stock calibration that is flashed into the system. And no, you can't flash in the stock calibration 5 times to erase the history cause it only records the change if it is different from the last stored calibration. So all of the hub bub about loking at the ECM/TCM and seeing requested torque higher than normal is just that, hub bub. The technition is only going to compare the CVN's from your drivetrain control modules to a list of numbers known to be approved and if they don't match then its warranty out the window.

Ok, well thats good news!
I always have my completley stock tune saved.
They checked all of the calibrations and it was all good, but I did not know if the edge was tuning the TCM
The efi live even notes what calibrations are not stock, sounds like I will be good then.

 

[dubious]

GM can only tell if non-certified calibrations have been flashed into the truck. If you only ever flash in stock calibrations then the tech will never know it wasn't another dealership that did the flash.

Read here:
http://forum.efilive.com/showthread.php?t=8471

This will explain in detail, assuming that you have some basic understanding of the ECM/TCM/BCM and the lanuage they speak to eachother, why they can see any non-stock calibration that is flashed into the system. And no, you can't flash in the stock calibration 5 times to erase the history cause it only records the change if it is different from the last stored calibration. So all of the hub bub about loking at the ECM/TCM and seeing requested torque higher than normal is just that, hub bub. The technition is only going to compare the CVN's from your drivetrain control modules to a list of numbers known to be approved and if they don't match then its warranty out the window.

Ok, well thats good news!
I always have my completley stock tune saved.
They checked all of the calibrations and it was all good, but I did not know if the edge was tuning the TCM
The efi live even notes what calibrations are not stock, sounds like I will be good then.

They scanned the ECM last time and it was stock and all was well.

This website is awesome, TONS of info in the TSB and DIY threads too,

thanks again!

 

[duratothemax]

ahh you need to re-read that thread....

EVEN IF YOU FLASH YOUR STOCK TUNE BACK IN, GM can still see that at one point there was a non-stock tune in there.

 

[redws6rocket]

ahh you need to re-read that thread....

EVEN IF YOU FLASH YOUR STOCK TUNE BACK IN, GM can still see that at one point there was a non-stock tune in there.

no they can not, if you set a dtc we can see a torque number that is much higher than it is supposed to be.

 

[JD4440]

The way I took it they check a database as to if the reflashes were done by a dealer/tech 2. If the # of flashes didn't match up that was the flag.

 

[Burn Down]

The way I took it they check a database as to if the reflashes were done by a dealer/tech 2. If the # of flashes didn't match up that was the flag.

This is what I was told also.

 

[Rikter]

Disallowed

The dealer refused to warranty my ball joints because of a tune chip. WTF? How does the chip affect the ball joints. Given the truck went in for all service intervals to a GM dealer. They supposedly greased the ball joints; they were dry when pulled apart. Cost me $1500 to change them. NOT at a GM dealer. AND they would not warranty the plastic bezel around the tailgate handle. Why? Tune chip.

 

[ripmf666]

The dealer refused to warranty my ball joints because of a tune chip. WTF? How does the chip affect the ball joints. Given the truck went in for all service intervals to a GM dealer. They supposedly greased the ball joints; they were dry when pulled apart. Cost me $1500 to change them. NOT at a GM dealer. AND they would not warranty the plastic bezel around the tailgate handle. Why? Tune chip.

They can only turn you down on your power train warranty

 

[JMDuramaxLB7]

The dealer refused to warranty my ball joints because of a tune chip. WTF? How does the chip affect the ball joints. Given the truck went in for all service intervals to a GM dealer. They supposedly greased the ball joints; they were dry when pulled apart. Cost me $1500 to change them. NOT at a GM dealer. AND they would not warranty the plastic bezel around the tailgate handle. Why? Tune chip.

Sounds like you need to invest in grease gun. My balljoints are all original on my truck with 130k+. Friend has close to 180k on his all original also.

 

[Jack Bauer]

Buy a spare ECM keep your stock one untouched swap back in for warranty issues.