Crank-no-start , or NO-crank (engine will not spin)? Was it running and stalled on it's own after the oil line blew? Possible spun (melted) bearing(s).
RepairPal Certified shops can diagnose and repair your 1990 GMC C2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
✔ï¸
MERRY CHRISTMAS!!! Oh..............wait , it's to early........nevermind!........