Air Filter Restriction Indicator for Chevrolet Chevy K Silverado - 4WD 2005

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.