1990 CHEVROLET P30 Wheels Problems

RE: NHTSA CAMPAIGN ID NUMBER: 91V123000 FOR MY 1990 CHEVROLET P3 I HAVE SPENT SEVERAL DAYS ON THE PHONE WITH GM AND GOTTEN NO HELP. MY VEHICLE IS AT A GM DEALERSHIP IN PHOENIX AND I AM TOLD GM ISN'T AUTHORIZING THEM TO HANDLE THIS SAFETY RECALL, DUE TO AGE. THIS IS A SERIOUS MATTER. HOW CAN GM DO THIS TO ME? IS IT LEGAL? MY P# IS A MOTOR HOME AND IS AT MIDWAY CHEVROLET, COMMERCIAL TRUCK SERVICE CENTER IN PHOENIX. IT'S SITTING THERE AND I'M NOT SURE IT'S SAFE TO DRIVE, BUT I'M BEING REFUSED THE SERVICE PER THE RECALLS. I CAN NOT FIND ANY HELP FROM GM CUSTOMER SERVICE LINE AS IT'S AN OUTSOURCED NUMBER TO PHILIPPINES AND THEY DO NOT HAVE THE SI (SERVICE INFORMATION) SYSTEM WHICH ALLOWS THEM ACCESS TO THIS OLDER VIN. THEY AND MOST DEALERS ARE USING GLOBAL CONNECT LOG IN AND IT...