2000 tundra fuel system problems.

Okay i just completed repairing my 2000 Tundra (which has 235,000 miles on it and counting) again for the third time in three weeks.
It all started on my way home from work when the engine quit. Previously I had stopped off at autozone a week before and had them pull the diagnostic code from the computer and it said that the electric motor on the throttle body was shorting out and I was told to just replace the whole throttle body which I did. One week later the engine quits again, this time it was the fuel filter that was completely clogged and as it turns out it was the original factory installed fuel filter from when the truck manufactured. One week later same thing again and this time I replaced the fuel pump, which was something that I was trying to avoid, because replacing a in tank fuel pump on a pickup in just a general PITA. On my Tundra, Toyota decided to change things up a little. When I have replaced fuel pumps I normally just unbolt and remove the cargo bed from the frame. Well Toyota decided to add a extra step to where I had to partially drop the fuel tank just to replace the fuel pump.
So are there any other fuel system problems that are going to surprise me or is the fuel system problems that I experienced and repaired a thing of the past now?

 

I thought there was an access panel under the rear access cab seats?
I hope you used an OEM Toyota pump. I had 3 Autozone fuel pumps fail in under a year and a half.
My original 1 lasted 210k miles. I drove a total of 13k miles in that year and a half.

 

Was the fuel pump clogged as well? Sounds like you got some nasty stuff in your gas tank. Usually the fuel filter is clean. Even after 20 years

 

I replaced my filter just because. It had 316k miles on it and was fine. Maybe you got some junk in your tank?

 

First of course thanks to all of you who replied, so I’ll answer all three replies.

Surprisingly the fuel pump was not clogged and yes southern Utah is the dumping ground for junk gas. I also looked for an access panel after I had partially dropped the fuel tank and no panel was to be found. The fuel tank itself was clean inside with no rust, dirt or debris to be found. As for the new fuel pump/fuel level sending unit assembly itself I purchased it from Rockauto and it’s from the OEM who supplies the majority of the fuel pump / sending unit assemblies to the car companies.
This has been a real head scratcher for me and if it happens again, the next thing to be removed, cleaned, inspected and replaced if necessary will be the ECM. I’ve owned both Toyota’s and Nissans and this is a first for me.