fuel pump problems need help

[LoudnLifted88]

my 1998 gmc k1500 vortec 305 auto has a weird problem when i flex my truck out (see pic below) the fuel pump cuts out and my truck will die but as soon as i get the truck back on flat ground it turns back on any ideas?

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[towman]

i would guess a line pinching shut or a wire loosing connection, worse case i would say baffles in fuel tank moving around

 

[LoudnLifted88]

i would guess a line pinching shut or a wire loosing connection, worse case i would say baffles in fuel tank moving around

tank is a year old and i check the connections last time the bed was off.... the pump just quits no noise from it until it levels out again

 

[bluex]

Could be a connection inside the tank

 

[LoudnLifted88]

Could be a connection inside the tank

i really dont wanna pull the bed this time of the year its cold out

 

[bluex]

Move south, it was 63* here today!!!!

 

[LoudnLifted88]

Move south, it was 63* here today!!!!

it was mid 30s here today

 

[soap wagon]

I have a similar issue with mine, but only if I lightly press the gas. I may have to cut a hole in the floor of my burb...

 

[SkyHighColorado]

How much gas is in your tank? Only asking because i suspected a fuel pump problem when my truck kept stalling on me going up hill in the mountains. Turns out you need at least a 1/4 tank in it for the fuel pick up to get a drink when its flexing or on an elevation change.

 

[LoudnLifted88]

The fuel pump just cuts out like its gettin no power and had 1/4 tank