2006 Chevrolet C4500

TRUCK HAS OPTIONAL AIR SUSPENSION SEATS. SEAT RELIES ON COMPRESSOR AND TANK TO BE RAISED OTHERWISE SEAT WILL REMAIN IN LOWEST POSITION. THIS MAY LEAVE DRIVER IN TOO LOW A POSITION TO DRIVE COMFORTABLY AND SEE THE ROAD EFFECTIVELY. TRUCK HAS REPEATEDLY HAD COMPRESSOR, RELAY, PRESSURE SWITCH FAILURES. DEALER HAS REPLACED COMPRESSOR, RELAY, AND PRESSURE SWITCH IN ORDER TO FIX SYSTEM PROBLEMS WHERE COMPRESSOR WHICH RUNS ERRATICALLY, EXCESSIVELY OR NOT AT ALL. LATEST REPAIR INVOLVED REPLACEMENT WITH A SUPPOSEDLY HEAVIER DUTY RELAY. TRUCK IS NOW OUT OF 2 YEAR WARRANTY AND THE COMPRESSOR HAS FAILED AGAIN. MANUFACTURER SHOULD BE REQUIRED TO FIX PROBLEM ONCE AND FOR ALL. THEY WARRANTY REPLACEMENT PARTS FOR 1 YEAR, WHICH IS JUST BEFORE PARTS FAIL THE NEXT TIME. ONCE WARRANTY IS OVER THEY ARE SUPPOSEDLY NO LONGER RESPONSIBLE RATHER THAN FIXING THE SOURCE OF THE PROBLEM ONCE AND FOR ALL INSTEAD OF "BAND AIDING IT" TEMPORARILY UNTIL THE WARRANTY EXPIRES. THIS IS A KNOWN FLAW AND IS LISTED AS A "NOTICE" TO CUSTOMERS AS A POTENTIAL PROBLEM. I HAVE ALSO HAD THE POWER WINDOW SWITCHES REPLACED ONCE AFTER THE VEHICLE WAS 1 1/2 YEARS OLD AND NOW 1 YEAR AFTER THAT, NOW OUT OF WARRANTY, THEY HAVE FAILED AGAIN. THIS IS JUST PAST THEIR 1 YEAR PARTS WARRANTY. I AM NOW UNABLE TO OPEN THE PASSENGER WINDOW. *TR