Yes, he said it sounds like a fuse or relay problem. I checked the fuse in his harness and it's good, checked the fuse on the firewall, good also. Not sure there is a relay in original lift pump harness??
1992 6.5L 2500 4x4 Silverado Reg. cab flatbed. Things I've done: Injectors,glow plugs,GP harness, glow plug controller, lift pump, Leroy's lift pump harness, OPS.