9-7X L6-4.2L (2008)
Ride Height Sensor: Testing and Inspection
Air Spring Sensor Calibration
1. Caution: A sudden release of pressure may cause personal injury or damage to the vehicle. The air suspension system is under pressure
until the air supply lines are disconnected. Use the following precautions when servicing the air suspension system:
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Wear gloves, ear protection, and eye protection.
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Wrap a clean cloth around the air supply lines.
Notice: Depressurize the air suspension system only after the rear axle is supported and is set between D- Height and Full Jounce.
Important: Remove the air suspension system fuse before working on the rear suspension components or the rear axle. Failure to remove the air
suspension system fuse could cause the calibration of the air suspension leveling sensor to change and the air suspension system not to function
properly.
Remove the air suspension system fuse.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Raise and support the rear axle at the designed D height. Refer to Trim Height Specifications.
4. Remove the rear tire and wheels.
5. Remove the air compressor mounting bolts from the frame and support air compressor.
6. Loosen both of the air supply line connections at the air compressor in order to depressurize the air springs.
7. Support the rear axle and set the rear axle to proper D height. Refer to Trim Height Specifications.
8. Loosen the air spring level sensor to the frame mounting bolts.
9. Notice: Failure to remove the air suspension auto level control sensor locating pin before the rear axle support is removed will cause damage to
the air suspension auto level control sensor.
Install air spring level sensor locating pin. Use proper size drill bit that fits snugly.
