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Exactly what I was thinking too on what caused the crack but that top gear also comes out with the pump so shouldn’t be too bad of a job.

I’ve watched that same video a few times myself and had considered changing it too until I saw the price but now I just have to. I don’t have the pump out yet so can’t confirm but it’s my understanding the original pump is a gear pump and not gerotor. My 3126 has 54K on it though for reference...

I would have probably run it too if it wasn’t for the crack almost clean across the pump arm.

RIP oil pump…

That’s probably what I’ll stick with then to keep things simple and considering my truck already has 54K on it…not sure the juice is worth the squeeze at this point.

If sticking with motor oil, can a synthetic oil such as Rotella T6 be used in the tranny without the need for a flush?

So one other thing I was thinking was back when the truck wasn’t running I had tried charging the tanks through the emergency front gladhand but it didn’t work so I assumed the check valve was bad. Could I have possibly lodged something in there not allowing it to breath like it’s supposed to...

Oh yeah that’s the one and only.

Ok I will check that along with some diagrams tonight. I was about to say service brakes are working properly and holding pressure fine.

Valve must not be getting air then or possibly faulty, just seems like a coincidence and if by removing the 5th wheel hookups somehow caused this, how am I not losing air in the tanks?

That’s what I initially thought and maybe off the mark here but tried holding down the button (not sure that matters at all) but that did not drop air pressure at all.

And that makes sense since those would be applying air to the truck brakes themselves. Hopefully someone here has deleted the 5th wheel connection before and can point me in the right direction. That's the only brake components I have messed with since they were last working so seems like a...

Right yeah I know that problem well but brakes have been caged for the last few weeks while truck wasn’t running. The problem i’m having is park brake button will not release the brakes, air pressure is good front and rear but brake lines at each port below where the christmas tree sits are now...

Trying to figure out why the parking brake will not disengage all of a sudden. Truck has been sitting for a few weeks while I've had the engine oil pan removed but just got that back on and couldn't move the truck. In the meantime, I did remove the 5th wheel air hookups (hoses still installed...

What’s a ballpark price for driveline balancing? I’m guessing from what I have read on here that I should get this done even though all my drivelines are indexed correctly. Just trying to get an idea of what to expect when I start calling around.

Yeah I saw that price tag too…wow.

Maybe I misunderstood your post but looking back at the diagram you shared (and as GeneralDisorder also mentioned), it appears that every single can on the rear axles need to be caged in order to release parking brakes (8 total)? Just trying to clear that up for my future reference.

Front emergency glad hand was the first thing that I tried but I think I have a stuck check valve because couldn’t get the system to build pressure from that. Gave me a reason to test 4 Low on the pickup anyway..

Oh haha well of course that was one of the ones I didn’t have caged. Anyways I finally got it back where I wanted it.

Yeah there is just one at each wheel but managed to scrounge up another 3 so left with one short. Just gonna try and drag the one wheel. Only need to go a few feet to get the cab back under the canopy while I start pulling apart the motor. Duramax having a hard time getting her to slide.