GMC Defense 2006 Owner's Manual Supplement page 85

Temperature Compensated Pressure
When a tire heats up, the air pressure inside the tire can
also be expected to increase. For example, a normal or
"required" pressure at 64°F (18°C) may be 34 PSI or
(2.34 Bar) and a normal pressure at 120°F (49°C) may
be 39 PSI (2.70 Bar). Both pressure readings are correct
at their respective temperatures.
The amount of deviation from the required pressure at
any temperature can be read by using the Pressure
Deviation mode of this system. If at any time you are
uncertain that the Actual Pressure reading on the gage
display indicates the correct tire pressure, switch to the
Pressure Deviation (+) readout. A blank display indicates
-
that the reading on the display is the correct one. Any (+)
or (-) value indicates the tire pressure is incorrect by that
value. This value can then be used to correctly inflate the
tire.
High Temperature Alert
This function changes the high-temperature alert
threshold. Factory default setting is 176°F (80°C).
5-42
To Program
1. Enter Level 1 Programming Mode see Entering
Programming Mode.
2. To enter this function press the MODE button until
the alert icon and temperature units are displayed.
3. Press the TIRE button to enter and display the
current value of High Temperature Alert.
4. Press the TIRE button to increase the value.
5. Press the MODE button to decrease the value.