Any thoughts on a Tuner for these cars? I just purchased a 2012 LTZ RS and the 1.4L Turbo engine could use a little more power.... With current fuel prices this type of car is going to be popular daily driver for many with longer daily commutes.

I got the tune to work. I found two dead cells on the left battery. The voltage at the OBD connector was 12.5v when the key was off. When the key was switched to the on position the battery voltage would drop to 11.1 volts after about 3 minutes. I am sure that this was the issue with the programmer ...

Any luck on finding the issue with the tune?

I pulled the requested information from the ECM. When I purchased the tuner back in January the 9r12 crom would not work on this truck at all. You sent me a custom crom once before on this same truck. The tow tune wouldn't work with that firmware either.

VIN# 1GCHK24607E544342

Calids#
12628596 ...

Relaoded the stock tune and updated the predator to the 9r15 crom. After saving the stock tune to the programmer, it shows all of the loaded tunes. The tow tune will not load, it goes half way through the write then shows the fail safe screen. then you have to reload the stock program. I did not ...

All of my other HP tunes work but the tow tune. It falls back on the failsafe and the original backup has to be reloaded. Says that the "Trailer Brake System Needs Service" on the cluster.
I have recieved one update on this programmer, when I purchased it.

2007 K2500HD LMM
U7186
sn# 266945
v.9t13g ...

Thanks for the update for the tool Mike. What is the differance in the revison between the 9r12 and the 9t13g update that was sent? Just curious, I work in the heavy equipment field and am constantly changing factory tunes on customer machines to make them perform better. Mainly cycle times ...

Reset the tool again, reloaded the 9r12 crom file to the tool and tried again. Same result.....

I know no one wants to work on the weekends, but some of us work 12 hr days during the week. It is hard for me to get to speak with your tech support before you close during the week. If not on the phone than maybe someone on the Fourm.......

Tried it again. Restored the factory backup and reset the tool. Same result. No HP tune for me this weekend......

I have found one other post that is simmular to mine. All that I got from it was that the truck had to be flashed by GM before the programmer would work. I don't see why the unit just can't download what is in the ECM and make a copy of it. The only thing that has ever been plugged into the ...

Yes, I just bought the tool from Summit Racing Equipment this week. Checked the revison, it is 9r12. This is my second Predator tuner that I have purchased, the first was for my GTO. No issues with that one, so I purchased one for my truck. I spoke with a friend at our local Diablosport dealer, he ...

I would have thought that they would have some tech support on Saturday. At least half the day.... I had this issue when the tool arrived on wednesday, but like most of the 91% of the people that are still employeed in this country, the tech line is open same hours that I work. I can't play with the ...

Tuner says that my "current calibration is not supported". "Predator was able to read a backup. You will need to export the backup using DS Downloader and call (800) 531-5484 x1" Has anyone else had this issue with a LMM truck? The truck is stock, only been to GM. Only thing that the dealer has ...

I have a 2007 2500 HD with a LMM engine. The truck has never had any type of modification done to it. This is my daily driver, so it is unloaded 90% of the time. The truck goes trough an active regen every 600 miles, I put about 350 miles a week on this truck. Most of the mileage is on the ...