let us know if your abs light and brake light come on.

was it a v6 stang?

thanks!

yeah there is 4 abs modules that gm offers for the gmt900. Its a bosch system. Some can handle the changes and some cant

the issue that causes the brake/abs light is a frequency issue between the vss and the ebcm when larger tires or different gears are put on. So yes, if your predator works ...

Also I just took my spare off

here is a updated pic of my truck just for ther heck of it

what revsion do you have on your predator beefcake? I have tried them all(from 8r10 all the way up to 9t09f) and HAVE NEVER seen one with a gear ratio selector.
What package silverado do you have? We have tested several 07 and newer gmt900 trucks(all of them being lt1 or better packages with jl3 ...

yes the hypertech adjusst both tire size and gear ratio changes. Basically you plug the hypertech module into your pc(it comes with the cable which is nice) you then with the software provided put in your new tire size and gear size and it gives you a new calibration which you send to the hypertech ...

you will need to get hypertech's (Hypertech 730102 - Hypertech Inline Speedometer Calibrator Modules) if you change gears and tires. your abs and brake light WILL come on, and there is no programmer on the market that can fix the issue. You need to get this module from hypertech which plugs into the ...

yes you will need to get the hypertech in line speedometer re calibrator.

With ANY tuner the lights on alot of these gmt900's will come on the minute you mess with the tire size(screws with gm calibrations)

So if you have the diablo put whatever tune you want in (87, diablo etc) but leave the tire ...

Ok, so after a billion topics on the abs/brake light coming on after tunes or changing tire sizes here is the fix(this is for 2007-2010 silverados new body_

After spending days of research and hours on the phone with tech support(GM) I found the solution lol!!

Ok on gmt900's the ecms(pcm) can only ...

actually concoursd you are wrong. If you get a custom tune from black bear you get free adjustments/tunes for life of the vehicle.

also it takes less time to remove and install a tcm/ecm on a nbs silverado than it does to install a tune from the tuner. Just fyi

well that sucks... no lights for me this is what I did

9t09f installed 87 oct tune with DOD off and put in my actual tire size of 285 60 18 didnt mess with anything else( my actual tire size which is in my stock tune/pcm is 265/65/18)

my truck is a 2007 1500 NBS 2wd 5.3
aem cai
and flowmaster ...

i can officially declare 9t09f a success! No lights or issues and I was even able to change my tire size to what I am actually running!

Still no lights for me!

so far about 80 miles and no issues!

AGAIN for those who try this 9to9f my truck is a 2007 silverado 5.3 2wd. I have thrown lights whlie using 9r05 9r07 and 9r10 all I did was install the 87 oct tune with dod disabled(thats it) now maybe this may have been a factor--my stock pcm program(my stock ...