Gotta 99 silverado with a 4.3. The original fuel pump went out at 170k replaced it with the full airtex unit from advance. that only last 6 months. Then got another under warranty that only lasted 2 months and then another and it only last 3 months. Now have replaced it with a Gm pump and here it is 4 months later and its going out again. Truck has 183k on the clock.

Weird thing is none of the pumps die electronically they will just stop putting out pressure at high rpms then start getting into the lower rpms till the truck just wont even crank.

Why does this keep happening? Whats killing them? im tired of changing the pump every few months for the same thing to happen. The truck has had fuel filter changed with each pump.