I have a 1997 GMC Suburban with a 5.7L. The engine stalls out while going down...

[mbc2004112000]

...the road. I replaced the pump.? I also changed the fuel filter, checked the cap, rotor, change the ICM. This problem accurs wether the engine is running temp, or cold, it also doesn't matter if I am cruising, or getting into the throttle, or coasting. The simptoms are as follows.
Doing 60 mph engine will lay down, then just quit, no engine codes, no warning(stumbling, or bucking ) just seems to quit.