14
E. REAR GEAR RATIO
• Press ‘N’ if the rear gear ratio has not been changed from
the factory installed gear. Making this choice will skip to
the next option.
• Press ‘Y’ if you have installed a rear gear with a ratio that
is different than the original factory gear. This choice will
recalibrate your speedometer/odometer readings and part- throt-
tle shifting for automatic transmissions for the new gear ratio.
Press the
▲ and ▼ arrows to see all of the gear ratios available
for your vehicle.
• Press ‘Y’ to lock in the gear ratio that you have installed.
At any time you may press ‘N’ to allow you to either try
again or skip to the next option.
NOTE: For automatic transmissions, a selection of any of
the available rear gear ratios will automatically set
wide-open throttle shifts similar to original factory
RPM settings for the new rear gear ratio.
F. TRANSMISSION
•
If your 8.1L vehicle is equipped with an Allison transmission, the
programmer will not offer rear gear or transmission options. Press ‘Y’
and the programmer will skip to the Report. If your 8.1L vehicle
is not equipped with an Allison transmission, press ‘N’ and the
programmer will proceed to the rear gear ratio (Section E) options,
then go into the shift points (Section G) and shift firmness (Section H) options.
•
If you have a 4.3/4.8/5.3/6.0L vehicle and press ‘Y’, the programmer
will continue with the shift points and shift firmness options.
If you press ‘N’, the programmer will skip to the Report.
CAUTION!
The speedometer and odometer will not be corrected accurately
if you use one (1) of the following tire size/rear gear ratio combinations:
4.10 gear with a tire height smaller than 26 inches
4.56 gear with a tire height smaller than 29 inches
IF REAR AXLE RATIO HAS BEEN CHANGED FROM ORIGINAL, PRESS Y
IF REAR AXLE RATIO HAS NOT BEEN CHANGED, PRESS N
USE UP/DOWN ARROWS TO SELECT CORRECT REAR AXLE RATIO, THEN PRESS Y TO SELECT OR N TO EXIT.
_ _ _ – –_._ _:1
IF YOU HAVE AN AUTOMATIC TRANSMISSION, PRESS Y
IF YOU HAVE A MANUAL TRANSMISSION, PRESS N
IF YOU HAVE AN ALLISON TRANSMISSION, PRESS Y
IF YOU DO NOT HAVE AN ALLISON TRANSMISSION, PRESS N
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