2007 gmc sierra ltz 5.3 died while driving

Doug_Scott · October 10, 2014

Is the pump the same length as the old one? When you say the tank is up on blocks, do you mean the blocks are under the where the pump is going? If so, rotate the tank 90 degrees and see if the pump fits now.

I give you credit, its not everyone that would post that they ran out of gas. The clue should have been the weight of the tank when you dropped it. I see that you mentioned the tank felt light to you.

gmc70 · October 10, 2014

I put a couple 2x4 pieces under the tank thinking mabey the tank would give a little and the pump would go in.

There is no shame in the fuel level, the gauge said it was over a quarter of tank I trusted the gauge why wouldn't I, it has been lower than a 1/4 tank before. hell I trusted this truck I spent 17k on this damn thing it should be trust worthy lol.

no the new pump is taller than the one that was in the tank not by much but it is, why would all the auto parts sites say this is the correct pump, very frustrating!

gmc70 · October 10, 2014

Delphi FG1059 Fuel Module is shown to fit this truck, Can anyone confirm this?

2007 GMC SLT 5.3 flex, 4WD, 78.7 bed VIN 0, 4 dr extended cab.

Doug_Scott · October 10, 2014

Is there any way to "adjust" the length by loosening any of the components and collapsing the assembly? Or is the entire assembly built in such a way that you cannot loosen any parts?

For example, if you have two steel lines that are connected via a rubber hose secured with two hose clamps, you could loosen the clamps and pull the steel lines away from each other to lengthen the assembly, or push them together to shorten the length, and tighten the clamps to secure it again.

Does the old unit have those rubber feet you mentioned, or is there any spot on the original pump where they could have been attached? Does the bottom of the new pump have sharp edges that make the rubber feet necessary to prevent the pump cutting the bottom of the tank?

gmc70 · October 11, 2014

Is there any way to "adjust" the length by loosening any of the components and collapsing the assembly? Or is the entire assembly built in such a way that you cannot loosen any parts?

For example, if you have two steel lines that are connected via a rubber hose secured with two hose clamps, you could loosen the clamps and pull the steel lines away from each other to lengthen the assembly, or push them together to shorten the length, and tighten the clamps to secure it again.

Does the old unit have those rubber feet you mentioned, or is there any spot on the original pump where they could have been attached? Does the bottom of the new pump have sharp edges that make the rubber feet necessary to prevent the pump cutting the bottom of the tank?

Negative, the Amazon site was wrong, I sent the pump back and ordered the one a local parts store said would fit.

I drove fords(F150's) and Jeeps before up until last year, Jeeps rock but I need a truck I live on a farm, I have horses and need to haul a lot of things and I grew tired of fixing fords, the 5.4 was a pain in the A%% and the 4.6 motor didn't fair much better so I figured I would give GMC a try. So far I've fixed a lot more than I think I should have for a 07 truck, now this fuel pump issue or fuel sender issue, I bought this before the big recall owner deaths problem, I like this truck, and It will be with me for awhile, what else tends to fail at the 100k mark that I should think of replacing? I've already replaced the front wheel bearings. what else should I be checking?

Doug_Scott · October 11, 2014

Don't know what know what "big recall owner deaths problem" was/is. I know that when ethanol started to become more common around here that many had issues with it damaging fuel level senders. The fuel sender on my GTP went screwy, it would read empty, but only take $10 to fill instead of the $50 or $60 it used to. First time it happened I thought something was really wrong since it was full Monday morning, and empty Tuesday night on way home from work. It was the first time I had bought the new high octane fuel (94 at that time) and since the GTP took premium due to supercharger, I tried the new stuff. Really thought I was only getting a quarter of the fuel mileage. GM replaced the sending unit a week later, and about 5 months after that I got a $25 gas card from the gas company that the fuel came from, along with a letter from GM saying they were not saying it was the gas that caused it, but here is a gas card from that company for the inconvenience. I only used that gas company for the lawn mower after the sending unit was replaced.

Wheel bearings are a maintenance item, along with brakes, front end parts etc. Fuel pump is the big price item that I do not think should fail as much as they do. Why they have to bury them in the fuel tank (with the filter right next them) seems not very smart to me. They know the pumps will fail, at least put a drain plug in the tank to make it easier, or put a access panel in the bed of the truck to access it.

I think the only other "weak" point is the transmission. If it is not treated right, it will give you issues. Generally, try not to abuse it, or overload the truck.

Your truck is 7 years old now, it used to be that the vehicle does not owe you anything at this point. 7 years is near 100k miles. I am not saying the truck is dead now, or is wore out, it just does not owe you anything. In other words, and repair that comes up now can be considered normal (short of engine or trans complete failure).