SOMFormula
June 12th, 2019, 01:53 AM
I could use a sanity check here...
I have a customer with a 2009 GM 1500. He installed a lift kit with 35" tires and 4.56 gears.
I have tried to adjust the speedometer being 6mph off and I have had zero luck with getting it to work properly.
In the Speedometer on the E38 I used the Speedo Calculator (like I've always done in the past) and it made adjustments to H0136 and H0139
I then went into the T43 file and adjust the tables that have the same numbers. Basically, making sure everything matches.
I then went into the "Ratios" folder and put in that it has 4.56.
With that said, the truck is still 6 mph off. Which gives us an issue with trans shifting.
Any help would be appreciated.
2285722858
I have a customer with a 2009 GM 1500. He installed a lift kit with 35" tires and 4.56 gears.
I have tried to adjust the speedometer being 6mph off and I have had zero luck with getting it to work properly.
In the Speedometer on the E38 I used the Speedo Calculator (like I've always done in the past) and it made adjustments to H0136 and H0139
I then went into the T43 file and adjust the tables that have the same numbers. Basically, making sure everything matches.
I then went into the "Ratios" folder and put in that it has 4.56.
With that said, the truck is still 6 mph off. Which gives us an issue with trans shifting.
Any help would be appreciated.
2285722858