Okay....I know that everyone has said if you change the tire height you need to get the Speedometer reprogrammed/computer reflashed (whatever you wanna call it). I totally 100% understand that!
Now......I asked before (& searched) that if you only changed the gears that you don't need to get the speedo changed is what everyone says.
I asked the dealer & I got two different answers....that's why I'm asking again.
I had 3.55 open gears in my truck & I just got a 4.10 LSD put in.
I have the 545RFE 5 speed auto tranny (in my 2005 2wd w/ 4.7) and the parts guy told me that it's read off some sensor off the transmission?
And then the service dept. manager told me that it was off the differential??
I have no idea and honestly don't even remember what they told me, but neither of them knew for sure.
Then they said to reflash it would be $80 or something.
So is the speedo gonna read correctly or not??
And where does it read off of??
Now......I asked before (& searched) that if you only changed the gears that you don't need to get the speedo changed is what everyone says.
I asked the dealer & I got two different answers....that's why I'm asking again.
I had 3.55 open gears in my truck & I just got a 4.10 LSD put in.
I have the 545RFE 5 speed auto tranny (in my 2005 2wd w/ 4.7) and the parts guy told me that it's read off some sensor off the transmission?
And then the service dept. manager told me that it was off the differential??
I have no idea and honestly don't even remember what they told me, but neither of them knew for sure.
Then they said to reflash it would be $80 or something.
So is the speedo gonna read correctly or not??
And where does it read off of??
