Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installation Procedure
Install the air suspension control module (3) on the air suspension controller (2).
- Automatic Level Control Air Compressor Bolt (1) - Install and tighten - Fastener Specifications
Install the air suspension controller (1) and air suspension control module as an assembly.
Install and tighten the 2 automatic level control solenoid bolts (1). Fastener Specifications
- NOTE:
Ensure that you push the line into the fitting as far as it will go. At least part of the white marking MUST be into the top of the fitting. Remember, when inserting an air line into an air spring fitting, just because the white marks are in the fitting, does NOT always mean that the line is fully inserted and pushing the one way check valve open.
Loosen the 7 automatic level control air compressor tube fittings (1) to allow removal of the 7 shipping plugs from the air suspension controller and DISCARD.
- Without removing the 7 automatic level control air compressor tube fittings (1) in the air suspension controller, fully insert the 7 automatic level control air compressor tubes into the 7 automatic level control air compressor tube fittings in the air suspension controller and tighten. Fastener Specifications
- Slightly pull on each line to ensure proper seating is obtained.
- Electrical Connector (2) - Connect
- Install the spare tire and wheel assembly.
Remove the automatic level control air supply reservoir air valve cap (1).
- 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).
- Using CH-52667 Air Spring Inflator, open the valve on the pressure gage to fill the automatic level control air supply reservoir.
- Using CH-52667 Air Spring Inflator and the shop nitrogen tank, fill the automatic level control air supply reservoir to 16 Bar (232 PSI).
- Close the pressure gauge valve and remove CH-52667 Air Spring Inflator from the automatic level control air supply reservoir.
- Install the automatic level control air supply reservoir air valve cap (1) and tighten. Fastener Specifications .
- Partially lower the vehicle, but DO NOT let the wheels touch the ground.
- Using GDS2 tool, use short-term inflate to increase pressure to the air springs:
- Front: 6 Bar (87 PSI)
- Rear: 5 Bar (73 PSI)
- Using GDS2, verify automatic level control air supply tank pressure is at 16 Bar (232 PSI), if not repeat steps 11 - 16.
- Remove the support and lower the vehicle.
- Verify the vehicle leveling system is out of service mode and has returned to normal operation. Clear any stored DTC codes if needed.
- Start the vehicle and allow to return to normal ride height.
- With the vehicle off the hoist and on flat level ground, inspect the trim height. Trim Height Inspection
Refer to Fastener Caution .
The air suspension controller and the air lines are color coded for ease of installation.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.