GMC Defense 2006, Owner'S Manual Supplement, Page: 30 / 116

3-11
Air Filter Restriction Indicator
If the vehicle has this feature, a gage will be located
on the accessory panel. It monitors the engine air
filter. As the filter gets dirty, the yellow indicator will
begin to rise. When it reaches the top of the scale,
the filter should be replaced. After replacing the filter,
reset the gage by pressing in the yellow reset button
(A) at the bottom of the gage.
Tire Pressure Monitor Display
The Tire Pressure Monitor (TPM) system uses radio
and sensor technology to check tire pressure levels
and temperature. If the vehicle has this feature,
sensors are mounted on each tire and wheel
assembly, except the spare tire. The TPM sensors
transmit tire pressure and temperature readings to a
receiver located in the vehicle. The TPM display is
located on the lower driver side of the windshield
molding. For additional information and details about
the TPM operation and displays see
Tire Pressure
Monitor System on page 5-34 .