2007 silverado brake light issue

m.mashburn · Post by **m.mashburn** » Wed Jul 06, 2011 7:35 pm

just bought my new trinity today and loaded it on to my truck. ive tried two different tunes that were on the trinity. both times after driving for a while my ABS light and parking brake light come on.
what do i need to do to fix this problem

my second question is... can i remove my trinity and still drive with out it pluged in?

Post by **mikel** » Thu Jul 07, 2011 9:53 am

did you change tire size or speed limiter?

no need for trinity to be plugged in...

m.mashburn · Post by **m.mashburn** » Thu Jul 07, 2011 12:13 pm

yes changed the tire size and the speed limiter on the diablo tune. but i am now on the 87 octane tune.

should i reset the parameters back to normal and re load it?

TheGrinch · Post by **TheGrinch** » Thu Jul 14, 2011 9:14 am

Good luck. It would never work for me. Finally bought HP tuners, and even they have the problem if you just tell it to change tire size, something funny with GM's code, but at least you can work around it. I finally just changed the VSS speed sensor ratio. But since you only have 40 pulses per rev, you can only change it in 2.5% increments. I needed like 4.5% change with 33" tires so changed it 5% and it's pretty much dead on according to GPS.

I guess diablo could offer to change tire size by 2.5% increments lol.

m.mashburn · Post by **m.mashburn** » Thu Jul 14, 2011 3:26 pm

i changed it back for now to get rid of the brake light... y is it coming up with the light if thats part of the tune? can i get around it any other way or do i need to change the VSS like the grinch says?

2008Silvy · Post by **2008Silvy** » Fri Jul 15, 2011 11:31 am

This is TheGrinch - It's because of front/rear speed sensors being off or something like that. More than one thing measuring speed.

This has been asked about 50 times and there's never a solution. I had a custom tune and it still did it before I bought HP tuners (although if lew can change VSS he might be able to fix it for ya if you tell him how).

Other recommendations they've thrown out were to change speed limiters, change tire back to original aspect type numbers and just increase the first number, etc. Nothing ever worked for me. I tried a lot of things in HP too before I got it to work, but setting the tire size and everything back to normal and just changed the speed sensor (VSS) was the only way I got it to work.

Post by **mikel** » Fri Jul 15, 2011 1:29 pm

we're looking into some things here as well...

dans67 · Post by **dans67** » Tue Jul 19, 2011 11:41 am

Is this something that will be fixed soon hopefully?

2007 silverado brake light issue

2007 silverado brake light issue

RE: 2007 silverado brake light issue