1998 Chevy Surburban 1500 gas efi Vortec 5.7L V8-- engine dies in hot weather

Engine shuts down/off without warning after 1-2 hours of runtime in 95 degree weather. Starts right away, but shuts down within 5 minutes. Allow engine to cool for an hour or two, and resume normal operation. Night time driving, no problems. Water temperature gauge, and all other gauges normal. No check engine warning/code. Fuel pump noisy, but otherwise OK. Would have no idea of existing problem on short runs around town.

Sounds like a fuel pump especially since it is noisy.