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Need some hellp with alfaobd tire size 38s
- Thread starter Jaymasta
- Start date
Tire Size AlphaOBD.docx
Tire Size Notes Make sure to enable data logging and connect/backup to Google Drive 2018 Trucks need security bypass cable Tire size is stored in the BCM Tire size must match in BCM and ABS settings Run ABS Initialization in ABS diagnostic after size change Procedure Key in RUN position Open App ...
is this wrong?? i did VEHCONFIG 4- DYNAMIC TIRE CIRCUMFERENCE (ALL OR REAR)
then tried to clear faults and they are all still there
Yes, whatever year your truck falls into. 2021 if that's what year your truck is.
FWIW, unless you have the option set to ignore the BCM, AlfaOBD is going to auto-select the correct MY BCM anyway regardless of which you chose.
In fact, there are some late MY 20 trucks that have BCM PN recognized by AlfaOBD as 21.
I see you got this going, but for the benefit of anyone looking, ABS Init just gives you a list of the next steps to perform, there isn't going to be a next/start button lit up.
that info would of saved a heart attack lol quick question im tryin to disconnect the two prongs under the dash any special trick getting those suckers out? for the bypass cable
You can leave them connected and tuck the cable up hidden unless you're worried about a dealer finding it.
A very tiny jewelers or other flat tip screwdriver with 2mm or smaller tip, or a pick to release that tab. I found the picks to be near impossible. Lots of light and a good eye you're in the right spot helps.
I ended up shaving down the hooks on the tabs on mine enough so they stay in place but just pull out with a light tug.
oh ok appreciate it! ill probably just tuck it up until i have a recall or something
Um, no, that's probably something related to your lift or the tires hitting the radius arms at full lock.
Changing tire size only affects the speedometer and possibly shift points.
Atty
Active Member
No, not that I'm aware. Where were you testing it? On hard ground (bitumen) or soft dirt etc? If it was on hard ground you were probably getting diff bind. This happens because when rolling distance between the wheels is different when turning and on hard ground can't "slip" to account for it.
Sent from my SM-N9600 using Tapatalk
Sent from my SM-N9600 using Tapatalk
Yea hard dry pavement. So don’t worry? What really scared me was when I put it back in 2wd it still did it until I put it in 4hi again then back to 2wd
The CAD was probably bound up, it sometimes takes a little movement to release.
I never would have expected you tried to check 4wd on pavement unless going straight.
IOW, don't do that. ;-)
Copy just paranoid about this road trip