ABS/Brake Light
- sseeya2001
- Posts: 44
- Joined: Tue Aug 25, 2009 4:30 pm
- sseeya2001
- Posts: 44
- Joined: Tue Aug 25, 2009 4:30 pm
Well, tried the changing of tire sizes, still to no avail. Think its pretty bad how we can't get any support, or any attempts to answer. We spent 3-400 on this product and it only throws service lights. Please can we get some support on this Diablosport guys!!!!!
2007 Z71 5.3L S&B CAI, Flowmaster catback, Diablo Programmed.
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09sierra6.2
- Posts: 65
- Joined: Sun Feb 22, 2009 8:29 pm
hey guys not tryin to be a smart a** but my buddy has a predator on his 07 silverado and his abs light came on as well but he left it on and drove for a few days and it went off and hasnt come back on.. However his is the CLASSIC!!! not the NBS soo is this problem just stayn on on the nbs trucks or most all 07 08??
- mypostoffice
- Posts: 4
- Joined: Wed Dec 16, 2009 11:42 pm
ABS CODES IN GLOVE BOX "JF3" AND OR "JF7"
Check your glove box door, inside, for one of the following codes: "JF3" or "JF7"; if your see either of these codes, you've purchased one of Chevy's rare phenomenons. Concisely, the codes above represent two ABS module manufactures; said modules cannot be re-programmed, period! The modules remain related to an ABS towing option, normally on work trucks. Regardless, if you see JF3 or JF7, you can't resolve the issue with any combination of programmers and or odometer add-ins; trust me, I've tried.
If you want the brake or ABS light out, simply lie to the tuner concerning tire size. I'd recommend rolling out your true tire diameter, with chalk, on pavement; and step your tire sizes down until the light extinguishes, likely near the tire diameter on the driver's door tire label (hint, hint). Finally, JF3 or JF7 are l@@king for near OEM parameters; and anything outside those parameters, you get a wondrously illuminated ABS/Brake light indication! Henceforth referred to as the "ABS Annoyance Light."
Note: this remain especially true concerning gear changes! ouch!
If you want the brake or ABS light out, simply lie to the tuner concerning tire size. I'd recommend rolling out your true tire diameter, with chalk, on pavement; and step your tire sizes down until the light extinguishes, likely near the tire diameter on the driver's door tire label (hint, hint). Finally, JF3 or JF7 are l@@king for near OEM parameters; and anything outside those parameters, you get a wondrously illuminated ABS/Brake light indication! Henceforth referred to as the "ABS Annoyance Light."
Note: this remain especially true concerning gear changes! ouch!
RE: ABS CODES IN GLOVE BOX "JF3" AND OR "JF7&
ok well atleast thats an answer... and yes evidently I have a "JF3" so does that mean Im just screwed cause I've tried everything even remotely close to the 265 65 R18 stock tire size with no success?

07 Silverado Z71 4x4
5.3 Diablo, K&N CAI
thaks for the info mypostoffice, how did you find this out that jf3 or jf7 is the issue?
I have js3, my stock tire size that is in my stock backup is 265 65 18 (I actually have 285 60 18 on the truck) I have installed the 87 tune with dod disabled and did not even mess with the anything else and the lights come on(9r05 9r07 9r10) I had no issues with the 8r10 so that leads me to believe that the jf3 or jf7 doesnt matter maybe?
I just installed 9t09f and no lights so far, ive put about 10 miles on so far so we will find out, if not its back to 8r10
tech guys for diablo any fixes? or do we wait because "you are working on it"
I have js3, my stock tire size that is in my stock backup is 265 65 18 (I actually have 285 60 18 on the truck) I have installed the 87 tune with dod disabled and did not even mess with the anything else and the lights come on(9r05 9r07 9r10) I had no issues with the 8r10 so that leads me to believe that the jf3 or jf7 doesnt matter maybe?
I just installed 9t09f and no lights so far, ive put about 10 miles on so far so we will find out, if not its back to 8r10
tech guys for diablo any fixes? or do we wait because "you are working on it"