Air Suspension Dump Control Switch
Notice: Do not operate the vehicle over uneven ground such as ramps, speed bumps, curbs, etc. with the air springs deflated. Doing this may lead to air bag separation from the piston, preventing the suspension air springs from reinflating.
The suspension dump switch is a two-position rocker switch (see Fig.) that allows the air in the air suspension to be quickly exhausted, lowering the rear of the vehicle. This makes it easier to connect to, or disconnect from, a trailer.
Fig. 1, Suspension Dump Switch
Notice: Never exhaust air from the suspension while driving. When the air is exhausted, the suspension will not absorb road shocks and components may be damaged.
To lower the rear of the vehicle, press the upper half of the rocker momentarily. To raise the suspension to its normal height, press the upper half of the rocker again.
When the suspension dump switch is pressed, the LED in the switch blinks while the suspension deflates or fills. When the suspension is completely deflated or filled, the LED illuminates steadily.
If the ignition is turned off while the vehicle is in dump mode, the power to the dump solenoid is cut off to prevent battery drain and the suspension system will autofill. The suspension will also autofill if the vehicle is operated with the suspension dumped at a speed over 5 mph.