LMM: 09 3500HD 269k Duramax work truck Diamond in the rough

[pitbull14218]

So I should replace the fuel sender? I'm trying to find it on rock auto, not sure if I'm finding the right one or not, one is about $70 the other is like $260

 

[Dozerboy]

Merged both your threads into one.

Thanks I was getting confused..


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[Dozerboy]

So I should replace the fuel sender? I'm trying to find it on rock auto, not sure if I'm finding the right one or not, one is about $70 the other is like $260

You mean fuel level sending unit?
You have to find it off the vin. There is like 15 fuel level sending units for the HDs


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[PureHybrid]

I was told POR15 can do that too because it becomes brittle and cracks which allows moisture under it and then it rots out even worse!

I planned to go with either Chassis Saver or Zero Rust, I'm on some autobody forums and I keep reading they hate POR15 because of what I just wrote. Just waiting on them to recommend one or the other for chassis saver or zero rust.

You can buy / use whatever you want, but they all work the same way. The only reason for these products to do what you're saying is because of poor surface prep and application habbits.

 

[pitbull14218]

What fuel sender do i have? looks pretty rusty.. guess ill change it.


https://i.imgur.com/JTiaZ7P.jpg

 

[2004LB7]

I got a replacement bed and tailgate. the bed needs some surface rust repaired, so i need to figre out the best method to do that.

Any recommendations on what to use to clean the frame under the bed and rust proof it? anyone use por15, thats what i am thinking of doing.

I would scrubb it down with diesel followed by a tide or similar powdered laundry detergent wash. If you have access to a pressure washer then use that to prewash it and final rinse.

Depending on if you live where rust is an issue or not you could Por15 it or melt some wax in gasoline and paint that on. Since I'm in California I would probably just paint it with oil based rustolium after hitting the bare steel with phosphoric acid