Tractor hauler

Nick167 · Jan 21, 2017

On my 2001 2500hd Chevy with the 6.6 Durand I noticed this wet spot on the frame and it seems to diesel fuel but looks like it's leaking from the black piece of tubing there is this possible?

flembo · Jan 21, 2017

That doesn't look like tubing to me it looks more like wrap around the wiring what is above that.

Janicholson · Jan 21, 2017

Yes and no. It is (opinion) a conduit for electrical wires. If it is coming from inside that, it is getting into it from somewhere else (the yes). In my opinion it is likely coming from the two holes in the rail (the no). Put a clean folded rag behind the conduit and see if the front of the rag or the back gets oily. Jim

4play · Jan 21, 2017

I don't live in the rust belt, but almost every GM truck I have seen with a rusted brake line starts on top of the frame rail in the fuel tank area. Not saying that is what you have there but I would keep a close eye on your brake fluid level until you figure it out.

rustred · Jan 21, 2017

follow that wiring harness up to the engine and look from there... must be a fuel leak higher up and its running into the wiring harness then dripping out at that low spot. or check to make sure that there is indead a fuel hose in that wrap.

Mike in Wisconsin · Jan 21, 2017

I would almost bet it is a brake line leaking. Known to be a problem with this series of Chevy trucks. My 2002 1500HD has had all the brake lines replaced in the last year. 189,000 miles on it and in Wisconsin salt.

Nick167 · Jan 21, 2017

I did check the brake fluid and it was normal but I will keep an eye on it there was a drip and it seemed green I looked close at that conduit and it seemed like it was seeping out of there if it is could this cause the wires in there to short out and cause the gauge not to work?

VADAVE · Jan 21, 2017

GM has a technical bulletin out telling dealers and service centers to replace the brake lines in Chevy trucks early 2000's. It also includes the part number for kit which all to brake lines. How do I know--had the lines changed twice because of rusting once with a fully loaded gooseneck.
Personally I think it's a safety issue which GM should correct. Of course no one listens to one person, so I suggested to my insurance company that they might say something. More suggestions is better.

504 · Jan 21, 2017

It is not just a truck problem,any GM rear wheel drive car from 1965 till they quit building them had a brake line rust through problem. I have repaired a lot of them. My 1995 PU rusted through about 5 years ago.

Farmaller · Jan 21, 2017

My 02 3500 lost all brakes due to lines rusted through on top of frame where lines come down from master cylinder. I wouldn't drive your truck till you look on top of frame. I had all replaced except the one going over fuel tank. It's not a good feeling when you loose all brakes, and parking brake is not effective.

D7fever · Jan 21, 2017

I had rusted out brake lines on my p.u., Dodge , but they rust too. Fixed the problem, installed stainless steel lines, bought a set all pre-bent for reasonable money, I will never have to deal with rusted brake lines again. There are several outfits that sell pre-bent kits, I got mine from "finelines". May cost a little more than patching up a line, but you won't have to do it again.
Fuel lines rust out too, they have stainless for that purpose too.
The mfgrs should be putting on stainless in the beginning.

gab · Jan 21, 2017

That's just wiring conduit. Where's that section of frame at, up under driver's feet? Something under the master cylinder could have dripped on it and followed it down.

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Nick167

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flembo

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Janicholson

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4play

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rustred

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Mike in Wisconsin

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Nick167

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VADAVE

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504

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