u7194 2007 NBS GMC Sierra

devilish1500 · Post by **devilish1500** » Sun Mar 11, 2007 11:44 am

after recalibrating for my tire size my "brake" and "abs" lights are on on my dash. tried both methods of resizing. how do i turn them off and keep abs?

Post by **mikel** » Mon Mar 12, 2007 11:45 am

These new ABS modules are very ensitive to actual tire size. The numbers listed on the side of the tire are often way off.
The best advice would be to go to the tire manufacturers website and see if they list actual sizes for the tires you are running.
Use these measurements to fine tune the tire size input to the Predator and the lights should go out.

Thanks

devilish1500 · Post by **devilish1500** » Mon Mar 12, 2007 11:58 am

tires are pro comp xterrain 35x12.5r18 site shows actual as 34.8 dia and 12.5 width

my diablo is set to 317x62r18 or 33.5x 12.5r18 to make the speedo right

soooo if i set to 34.8 it'll be wrong speed, i had it set to 35, 34, and 33 at differnt points to tune the speedo and sensor was on at every one but fine when the computer had the factory tune in it and running the 35 tires (diameter enter mode)

Post by **mikel** » Mon Mar 12, 2007 12:05 pm

So, you have verified the speedo to be correct with a GPS then?
The best suggestion I could make is to alter the aspect ratio from '62' to a slightly larger or smaller value to get everything working together.

Thanks

devilish1500 · Post by **devilish1500** » Mon Mar 12, 2007 12:11 pm

yes i used gps to check my speed, ok i'll try that i guess

devilish1500 · Post by **devilish1500** » Wed Mar 14, 2007 11:03 am

adjusted the ratio up and down, still on finally got my owners manual and it says its the "dynamic rear proportioning" that is 'upset' when both the lights are on. any input on mixing that?

devilish1500 · Post by **devilish1500** » Wed Mar 14, 2007 2:04 pm

ok adjusted from 35-32.5, at 32.5 lights never go out. they are on as soon as the truck is started. the other sizes i have to drive around some to get the lights on. any MORE ideas?

devilish1500 · Post by **devilish1500** » Fri Mar 23, 2007 8:31 am

any news????? also noticed that when i tow a trailer and hit the tow/haul button there is no change in RPM like there should be

Post by **mikel** » Fri Mar 23, 2007 3:05 pm

We made a new update, it is on the web.

Thanks

devilish1500 · Post by **devilish1500** » Sun May 13, 2007 10:46 am

ok, downloaded the update when it came out. have changed the ratio up and down, width up and down and still cant get the lights out. again the reason i got the tuner was to fix my tire size. a few friends got hypertech tuners an just typed in 35" and it works perfect. whats next? i want my speedo fixed or a refund to get a tuner i can get to work

TC2000 · Post by **TC2000** » Mon May 14, 2007 10:25 pm

Hey Devilish sorry to hear your still having problems Did you try the settings I gave you over at CTW?? I dont see them in the thread so ill repeat them for you .... for a tire 12.5 x 34.8 x 18 use 317/67/18 for 12.5x35x18 try 317/68/18 Im pretty sure you have to enter the info into the predator in the metric sizes to get it to work .

devilish1500 · Post by **devilish1500** » Mon May 14, 2007 11:12 pm

tried ratios from 58 to 72

Post by **mikel** » Tue May 15, 2007 8:43 am

Have you tried resetting all parameters, and then re-entering the tire size?

Thanks

devilish1500 · Post by **devilish1500** » Tue May 22, 2007 3:11 pm

so i have to reset before every new size try? obviously i cant just put 317-68-18 and get it right....thats way to much effort to get the lights out

devilish1500 · Post by **devilish1500** » Thu Jun 14, 2007 9:58 am

hello? anyone????????

u7194 2007 NBS GMC Sierra

u7194 2007 NBS GMC Sierra

RE: u7194 2007 NBS GMC Sierra