Inflating and Deflating the Air Suspension System

WARNING: Do not remove an air spring under any circumstances when there is pressure in the air spring. do not remove any components supporting an air spring without either exhausting the air or providing support for the air spring to prevent vehicle damage or personal injury.

WARNING: Disconnecting an air line that is connected to the air compressor can cause personal injury or damage to components as high pressure air is vented uncontrolled.

WARNING:
^ Do not attempt to install or inflate any rear air spring that has become unfolded to prevent vehicle damage or personal injury.
^ Any rear spring which is unfolded must be refolded prior to being installed in a vehicle.
^ The air spring refolding procedure should only be used for an air spring which has never supported the vehicle's weight while in the improperly folded position.
^ Improperly folded air springs found on vehicles during pre-delivery inspection or after use must be replaced.
^ Do not attempt to inflate any air spring which has been collapsed while uninflated from the rebound hanging position to the jounce stop.
^ When installing a new air spring, care must be taken not to apply a load to the suspension until springs have been inflated using the air spring fill procedure.
^ After inflating an air spring in hanging position, it must be inspected for proper shape.

1. Make sure air spring is in the proper shape with no folds or creases.
2. Turn the ignition switch to the RUN position.
3. Connect NGS Tester to the Data Link Connector (DLC).
4. Select the air suspension control module active command LR_SOL (LR) or RR_SOL (RR) from off to on.

5. NOTE: When using the air suspension control module active command AS_COMP, do not run the air compressor for more than three minutes to prevent overheating and shutdown. If this occurs, wait for the system to cool down before resuming the inflation procedure.

Select the air suspension control module active command AS_VENT to deflate the air springs or AS_COMP to inflate the air springs.