GM Truck Fuel Pumps

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Originally Posted by GoldDot40
The mid-2000 styles all have external filters mounted on the frame rail. The reason for the common failure is likely exactly what you stated. Running them too low before refueling on a regular basis.

My 2006 truck does not have an external filter. The intank filter is oversized to last at least as long as the pump. They also designed it to be somewhat self-cleaning - when the pump turns off and the suction stops, some of the dirt on the filter falls off on to the bottom of the tank.

I regularly run the tank down to about 3 gal of gas remaining and I am still on my original pump at 202000 km / 130000 mi. The pump sits in a reservoir that maintains a certain level of fluid in it, even if the tank is almost empty. That should keep the pump cooled. At least that is what I read.

I am planning to prophylactically change the pump instead of waiting for it to fail and strand me on the side of the road. I intend to lift up one side of the bed of the truck to access the top of the tank.
 
Originally Posted by clinebarger
The 04,05,06, & 07 GMT800 pumps seem to last a looong time! Which is the polar opposite of '99-'03 GMT800 pumps.


That's been my experience. I think around the same time they switched to the in tank filter.
 
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