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.
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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2102 (SUSPENSION CONTROL SYSTEM - SUSPENSION LEVELING)DIAGNOSTIC INFORMATION AND PROCEDURESAUTOMATIC LEVEL CONTROL SYSTEM LEAK TESTNOTES
2006 Chevrolet Suburban C2500, 6.0 U
Automatic Level Control System Leak Test: Notes
2006 Chevrolet Suburban C2500, 6.0 USECTION Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
J 22124-B Pressure Gauge (0-300 psi)
- Disconnect the air tube from the air dryer.
- Attach the air tube to the J 22124-B pressure gauge on the side opposite the toggle valve.
- Close the toggle valve.
- Apply service air pressure to the service valve and pressurize until the J 22124-B pressure gauge reads 550 kPa (80 psi).
- Verify that the system maintains pressure for at least 1 minute.
- If the system does not maintain the specified pressure for the specified amount of time, check the shock absorber air sleeves, air tubes, and all connections for air leaks using a soapy water solution. Repair or replace any leaking components.
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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.