Automatic Level Control Module Replacement

Special Tools Rear Suspension CH-52667 Air Spring Inflator Equivalent regional tools: Special Tools

Warning

If the air lines need to be removed to perform repairs on any air suspension components, depressurize the Automatic Level Control System. This will prevent vehicle damage or personal injury.

Warning

Do NOT remove Automatic Level Control System components under any circumstances when the system is pressurized. Disconnecting a pressurized air line that is connected to an Automatic Level Control System component can cause damage to components or personal injury.

Caution

After servicing Automatic Air Suspension Leveling System, use Nitrogen to recharge the system. Using compressed air can expose the Automatic Air Suspension Leveling System components to moisture and or dirt resulting in premature wear requiring unnecessary repairs. Removal Procedure

1. Remove the spare tire and wheel assembly.

Note

Service mode will be automatically enabled when the ride height sensors detect the vehicle has been lifted off the ground. Service mode will automatically be disabled when the vehicle reaches 16 km/h(10 MPH).

2. Using the scan tool, deflate the automatic level control air supply reservoir.
3. Raise and support the vehicle. Lifting and Jacking the Vehicle

Automatic Level Control Module Replacement — figure 1

4. Remove the air intake/exhaust line (1) from the body grommet.
5. Remove the air line retaining clip (2).

Automatic Level Control Module Replacement — figure 2

6. Remove the air intake filter retainer (1).

Automatic Level Control Module Replacement — figure 3

7. Disconnect the electrical connector (1).
8. Remove the wire harness retainer (3).
9. Disconnect the electrical connector (2).

Automatic Level Control Module Replacement — figure 4

Note

The air lines and air suspension controller are color coded.

10. Remove the 5 automatic level control air compressor tube fittings (1) from the air suspension controller.

Automatic Level Control Module Replacement — figure 5

Note

The new automatic level control module air suspension controller will have new automatic level control air compressor tube fittings installed.

11. Remove and DISCARD the 5 old automatic level control air compressor tube fittings (2) and bite rings from the 5 automatic level control air compressor tubes (1).

Automatic Level Control Module Replacement — figure 6

12. Disconnect the air suspension controller electrical connector (1).

Automatic Level Control Module Replacement — figure 7

13. Automatic Level Control Module Bolt (1) » Remove [4x]

Automatic Level Control Module Replacement — figure 8

14. Automatic Level Control Module (1) » Remove Installation Procedure

15. Automatic Level Control Module (1) » Install

Caution

Refer to Fastener Caution.

2. Automatic Level Control Module Bolt (1) » Install and tighten [4x] — Fastener Specifications

3. Connect the air suspension controller electrical connector (1).

Automatic Level Control Module Replacement — figure 9

Note

The air lines and air suspension controller are color coded.

4. Loosen the 5 automatic level control air compressor tube fittings (1) to allow removal of the 5 shipping plugs (2) from the air suspension controller and DISCARD.

5. Without removing the 5 automatic level control air compressor tube fittings (1) in the air suspension controller, fully insert the 5 automatic level control air compressor tubes (3) into the 5 automatic level control air compressor tube fittings in the air suspension controller and tighten. Fastener Specifications

6. Connect the electrical connector (2).

7. Install the wire harness retainer (3).

8. Connect the electrical connector (1).

9. Install the air intake filter retainer (1).

10. Install the air line retaining clip (2).

11. Install the air intake/exhaust line (1) in the body grommet.

12. Install the spare tire and wheel assembly.

Automatic Level Control Module Replacement — figure 10

13. Remove the automatic level control air supply reservoir air valve cap (1).
14. Install CH-52667 Air Spring Inflator to the automatic level control air supply reservoir air valve (2) and set the regulator on the nitrogen tank to 16 Bar (232 PSI).
15. Using CH-52667 Air Spring Inflator, open the valve on the pressure gage to fill the automatic level control air supply reservoir.
16. Using CH-52667 Air Spring Inflator and the shop nitrogen tank, fill the automatic level control air supply reservoir to 16 Bar (232 PSI).
17. Close the pressure gauge valve and remove CH-52667 Air Spring Inflator from the automatic level control air supply reservoir.
18. Install the automatic level control air supply reservoir air valve cap (1) and tighten. Fastener Specifications.
19. Partially lower the vehicle, but DO NOT let the wheels touch the ground.
20. Using GDS2 tool, use short-term inflate to increase pressure to the air springs: Front: 6 Bar (87 PSI) Rear: 5 Bar (73 PSI)
21. Using GDS2, verify automatic level control air supply tank pressure is at 16 Bar (232 PSI), if not repeat steps 12 - 16.
22. Remove the support and lower the vehicle.
23. After installation, program the automatic level control module. Control Module References
24. Perform the automatic level control trim height learn. Automatic Level Control Trim Height Learn