Ride Height Adjustments

Ride Height Adjustments





Special Tool(s)

Inflation and Deflation of the Air Suspension System

1. NOTE: Make sure that the air suspension switch is in the ON position

NOTE: Make sure that a battery voltage of at least 11 volts is maintained while carrying out this procedure.

Turn the ignition switch to the ON position.
2. Connect scan tool to the Data Link Connector (DLC).
3. Select Air Suspension Control Module under Active Command Mode:
^ VENT FRNT to deflate the front down.
^ LIFT FRNT to inflate the front up.
^ VENT REAR to deflate the rear down.
^ LIFT REAR to inflate the rear up.

Calibration

Ride Height Resetting

1. NOTE: Make sure that the air suspension switch is in the ON position

NOTE: Make sure that a battery voltage of at least 11 volts is maintained while carrying out this procedure.

Turn the ignition to the ON position.
^ Exit the vehicle, close all doors and allow the system to vent the vehicle down to kneel height (approximately 45 seconds).
2. With the ignition remaining in the ON position, shift the vehicle into DRIVE and then back to PARK.
^ Exit the vehicle. close all doors and allow the vehicle to pump to trim (approximately 45 seconds).
3. Measure the ride height.
4. Open the LF door.
5. Connect scan tool to the Data Link Connector (DLC).
6. While outside of the vehicle, select the proper vehicle year, model and engine type.
7. Select 4WAS module.
8. Using the active command mode, vent or lift the vehicle to achieve the correct ride height.
9. Select the "Save Calibration Values (Store Ride Height)" scan tool command to calibrate the 4WAS module.