hi i been having prob with the air ride on my 2003 went to dealer said levelers on frame workin but comp wont turn on so he pulled out the relay in the firewall jumped 2 wires comp turned on but truck wont damn lift its all the way down for a coulpe weeks now left comp on for like 5 mins truck wont lift cant hear any air leaks any ideas boys ps he thinks its the module on the compressor i dont want to take a$600 chance would rather by a complete set up off wreckers for like $400 thanks

 

Might try a different dealer and get a real diagnosis.