James Ballentine

Hopefully my mpg goes up or better than 12

So I replaced the fuel filter today. I took it for a drive and it did not die on me. The filter must have been clogged enough to make the pump work harder and cause relay to over heat and fail. I will post back again in a few days of driving around to confirm it. Thanks all for the replies.

Thanks for the responses i will check it out here in a bit with my volt meter and take on the freeway to see if it will do it and then see what goes on the relay. I will post what i come up with on it. Update.. took it out for a drive and the relay failed. I swapped it out with a spare and drove back home. When I swapped the relay out I did notice a slight temp increase on the relay nothing to where I could not handle it just a difference from the spare. I opened the one that failed everything was physically fine. I put that one back in without the cover on and started it up. Worked just fine. So yeah I think the pump is drawing to much amps making the relay open on overload and kill it. I used a toothpick to push the relay closed with key off could hear fuel being called for in the engine. I used the pick behind it so it could not close when it was being started got the issue like what happened while driving at 70 no fuel. I did get under the truck and there is a external filter. I am going to start there and replace that see what happens. Next step would be replacing the pump if I still get the same issue.

It has done it 3 times. I have not tried to drive about 65 again recently. So when I get on the freeway no warning on going out at all it just instantly cuts out. Its not the yellow 20 amp little fuse it is the relay right next to it same as DRL and AC relay the numbers on the top of the relay are 86 30 85 and 87. I was wondering if I am drawing to much power from the pump it probably is the original one in the truck. Just wonder why it would not blow the fuse first instead of the relay itself.

Hello, I have searched around for post about fuel pump relay issues and have not found anything about it. I have a 2002 Silverado 2500HD 6.0L. So what I have done to get here to this point is the starter went out on the truck. While I had that out I replaced the crank sensor while I had access to it. When I put it back together I put the shield for the starter on in the wrong spot being that I was out in the cold and snow changing it out. When I went to start it the main fuse for the vehicle blew (didn't know what the issue was). I had it towed to the dealer around the corner to figure that out since I was already frustrated at that point and just wanted it back on the road. That was taken care of but driving on the highway it started throwing P0300 random misfire which the crank sensor just needed to have a relearn done on that. Now I drive on the highway and get above 65mph to 70mph the fuel pump relay blows, stranded i just swapped the daytime running lamps to get it back up and running to get off the freeway. Strange thing is that I can drive it all over town 60mph and slower and do not have any issues at all with the relay going out. But even just getting up to 65/70 and then slowing back down to 55 it went out on me. I am scratching my head and have googled and looked up a whole different types of ways to word the problem I am having and still come up with no answer. So if someone has had this issue and what the fix was it would be great. I miss driving on the freeway at times and taking back ways thru town but not always. Just those times I want to get A to B faster it is frustrating. Thanks Again