I have a '95 GMC Suburban. It blew the 30 amp ignition control fuse. I swapped a 40 amp spare I had w/ same result. No idiot light in the instrument cluster show up until a new fuse is inserted. There was no warning of any pending trouble. It ran great. It has a new starter, alt, battery installed within 1 year. Tow ruck operator suggested wiring problems in steering column. Sounds pretty complicated. What troubleshooting can I do.