OPERATING INSTRUCTIONS
INTRODUCTION PARTS DESCRIPTION INSTALLATION OPERATING INSTRUCTIONS INTERNET UPDATES APPENDIX
43
USER GUIDE
Choose the method for inputting tire size that best ts your
needs. If your tire size is printed on the tire in P-Metric the
easiest option will be choosing P-Metric (shown below).
After selecting the method, you’ll see the following screen
Use the key pad on the right hand side of the screen to enter
the tire size that is currently on your vehicle. You can navigate
through the numbers with the UP/Down arrows, or by touch-
ing the numbers (if you have a CTS). Once you’ve entered the
value hit enter and the Custom Tire size you’ve entered will be
saved.
Changing the tire size on the screen will not automatically re-
calibrate the vehicle computer for tire size, you must program
the vehicle in order for the changes to take place. Once you’ve
set the tire size it will be saved, and when you program a
power level to the truck the tire size will be programmed into
the factory computer and re-calibrate the speedometer.
After you’ve saved the tire size in this menu, you will not need
to re-enter it in custom options, it will be saved and every time
you program the vehicle it will program in the saved tire size
data.
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