HD23 Component Check (Shock Fluid Leak)
^ One of the shock/strut assemblies on the vehicle has leakage a large amount of shock fluid into the air spring canister. Refer to Strut/Service and Repair replacement procedures of the bad shock/strut. In addition to replacing the shock/strut the following components must also be replaced:
^ All air suspension air lines.
^ Air compressor assembly.
^ Drier assembly.
^ Remove all air spring solenoid valves and replace filter located at opposite end of where airline attaches.
All service completed -- REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes