1999 Chevy Silverado V8 Four Wheel Drive Automatic 96000 miles
fuel pump started buzzing @ 94000 miles. Engine started missing last week. Changed pump and the miss is still there. Codes show clylinder #7 misfire. Changed plugs, wires, and changed around coils and the miss is still there on clylinder #7. The other code that came up one time was random/multipal clylinder misfire, but it only came up once. Any help?