GMT400 Suburban 1500 Fuel Pump Access Hole

[mistaake]

I've seen a LOT of people do this but some online searches don't show measurements where the cut the hole and how big. I did find measurements for a few of the GMT800 Suburbans but none for the GMT400s.

I might just have to guess based on other photos, drill a little hole, and look in it, but I'd rather know going in where everything is so I don't blow up my truck. Except that would solve quite a few of my problems... But seriously, I refuse to pay a local mechanic $150 to drop the tank and install my new fuel pump because I'm pretty sure it'll fail again and I want to be sure I can change it easily at that time.

 

[94burbk1500]

I wish I could help with the measurements. I did mine the old fashioned way, and it was a bit of a pain in the ass, but not that bad, except for the part where I didn't know how much fuel I had and spilled a whole bunch when i didn't properly support the tank. My truck is on it's third fuel pump in 24 years, they don't go that often. lol

 

[magimerlin]

Here yah go... my googlefoo is strong....lol... just googled "gmt400 fuel pump trap door"...

http://www.gmt400.com/threads/fuel-pump-access-panel.11423/

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[mistaake]

Here yah go... my googlefoo is strong....lol... just googled "gmt400 fuel pump trap door"...

http://www.gmt400.com/threads/fuel-pump-access-panel.11423/

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thanks, but i read the whole thread and nothing about suburbans.