Well now my friend may or may not be able to help me... freakin aggravating. I can't drop that tank by myself. So lets say if I were to cut a hole in the "trunk" area, where abouts would I have to do it? Are there any specific measurements to go by?

 

I just saw a thread somewhere... can't find it right now...

Best thing to do is to start by eyeballing the center of the sending unit, then drill a 1/2" hole or bigger where you think the center is. Then using either a jigsaw or body saw with a metal blade start making the hole bigger. Eventually you'll be able to see where the hole needs to be.

I think you need to give the sending unit/pump a little twist when you take it out so you might have to enlarge it a little more than you think.

 

Dropping the tank can be a chore, especially when it is full. But it is not as bad as you think. I'm not a fan of cutting holes in the floor. It literally just opens another can of worms to deal with later. A good hydraulic floor jack on wheels, piece of plywood, straps, a helping hand, and common tools will more then suffice.

I believe AC Delco and Delphi are the OE F-pumps used by GM. They are a little more spendy but a better investment. You must replace the fuel filter when replacing the fuel pump for warranty purposes. Just a heads up...some f-pumps come with a new pigtail and may require some splice and solder. It is no biggy instructions should be in the box.

I am not a "tech" by any means but I have worked counters at several parts stores.

Good luck to you. T

 

Yea... my main concern, other than being squished by the tank, is how I'm going to bench press this tank and hold it up while I refasten the straps. I'm not a girly girl by any means, but I'm also not Xena Warrior Princess. And since my friend flaked out I don't really have anyone else. to help me.

 

Have a floor jack under it so u can lower it down.
Ratchet straps are also helpful to do that in a pinch.

 

I have a buddy who used one of the hydraulic shop seats to hold the tank up while he fastened the tank. Depends on how much lift you have but floor jacks weren't enough for him.

 

Hmm... I do have a floor jack....

 

LOL like what? this has been done for a LONG time by many people.

 

True that...I'm just not a fan of it. IMO you're messing with the integrity of the floor for a bit of convenience. Then you gotta turn around and somehow patch the floor after your done. Not only that...if not patched correctly there are a number of things to also consider such as the possibility of rust developing around the hole, exposure to elements such as wind, rain, mud, dirt, and so on.

Girly has got a darn good looking Blazer. Why cut a hole?

Now if it was pickup...by all means have at it. I've gone as far as lifting the bed off the chassis just to get to the f-pump.

As far as getting squished by the tank. The tank itself isn't heavy at all. It's the content. Drain or siphon as much of the fuel out first before you get started.

 

I cut a hole in the floor of my Jimmy, will not look back at all, and this is on a 90% mint 93 jimmy, so how nice the truck is, really has nothing to do with this situation. the floor is not compromised at all for structural integrity. patching it back up was easy as pie, since you use the same piece that you cut out. a quick spray of primer on the fresh metal that was cut solves rust, and RTV solves weather elements.

And then, the next time the fuel pump needs to be done, its as simple as pulling up the carpet, cutting the RTV, and opening the door. Much easier.