Air Suspension Controller 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

Air Suspension Controller Replacement — figure 1

4. Electrical Connector (2) » Remove
5. Remove the 7 automatic level control air compressor tube fitting (1) from the air suspension controller.

Air Suspension Controller Replacement — figure 2

6. Remove the 2 automatic level control solenoid bolts (1).

Air Suspension Controller Replacement — figure 3

7. Remove the air suspension controller (1) and air suspension control module as an assembly.

Air Suspension Controller Replacement — figure 4

8. Automatic Level Control Air Compressor Bolt (1) » Remove [2x]

9. Air Suspension Control Module (3) » Remove Installation Procedure

10. Install the air suspension control module (3) on the air suspension controller (2).

Caution

Refer to Fastener Caution.

2. Automatic Level Control Air Compressor Bolt (1) » Install and tighten — Fastener Specifications

3. Install the air suspension controller (1) and air suspension control module as an assembly.

4. Install and tighten the 2 automatic level control solenoid bolts (1). Fastener Specifications

Note

The air suspension controller and the air lines are color coded for ease of installation.

5. Electrical Connector (2) » Connect
6. Install and tighten the 7 automatic level control air compressor tube fitting (1) to the air suspension controller. Fastener Specifications
7. Install the spare tire and wheel assembly.

Air Suspension Controller Replacement — figure 5

8. Remove the automatic level control air supply reservoir air valve cap (1).
9. 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).
10. Using CH-52667 Air Spring Inflator, open the valve on the pressure gage to fill the automatic level control air supply reservoir.
11. Using CH-52667 Air Spring Inflator and the shop nitrogen tank, fill the automatic level control air supply reservoir to 16 Bar (232 PSI).
12. Close the pressure gauge valve and remove CH-52667 Air Spring Inflator from the automatic level control air supply reservoir.
13. Install the automatic level control air supply reservoir air valve cap (1) and tighten. Fastener Specifications.
14. Partially lower the vehicle, but DO NOT let the wheels touch the ground.
15. Using GDS2 tool, use short-term inflate to increase pressure to the air springs: Front: 6 Bar (87 PSI) Rear: 5 Bar (73 PSI)
16. Using GDS2, verify automatic level control air supply tank pressure is at 16 Bar (232 PSI), if not repeat steps 9 - 12.
17. Remove the support and lower the vehicle.