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It may be the end cover or cover/guide for the cable that is used to raise/lower the window.

So were you in mode? The air from the passenger side could have been the intermediate axle diff solenoid releasing which would happen with a shift either into or out of mode… as suggested check the codes(up and down arrows simultaneously to enter maint mode, then mode button to step thru the...

Idk spring rate, i know of no-one who has removed any leafs. i do know someone who added bags to the rear to balance things a little better with the habitat weight they added…

I would say time is at least as important as concentration. In the end the only thing you can do is get it out and eliminate the source, and the sooner you do that the better... will the trans survive? Only time will tell… love those videos from “professionals” like tim the transmission guy...

Yes vehicle speed sensor is in the transfer case at the output, same as any other vehicle. I do not know if the TCU can alter/scale the output, but the speedo dip switches will need to be changed to display correctly. CTIS uses the raw speed pulses so will also be out of wack and not sense...

Its not so much bringing back 1st gear, that low 1st range is the add-on gear to the 6 normal speeds found in the 3060 core transmission. The 2nd gear that it starts in is actually the normal 1st ratio for the 3060 trans + the fixed 1.2:1 transfer case ratio… You could always down arrow to...

Yep, because if you get into a situation where you lift one of those 4 rear wheels or float an axle(small ditch or rise), all the torque will escape there and the other axle will loose all its applied torque. Locking that balancing diff keeps torque moving equally to both axles… it is the same...

Its only an issue if you have a winch truck, the aux input can be reprogrammed on any other truck for exbrake kickdown/pre-select.

Sadly multiple fluid changes is probably the best option…

All of them, thats weird. @superman may have an idea, but nothing I have seen shows the solenoids as a discrete component. There are at least two manifold block variants used on the LMTV that I have seen and they use different style pilot solenoid assemblies to manipulate a small amount of air...

I suspect it would, but you would have to get the truck to shift down to that gear first, same as using the down arrow. And like the down arrow, I suspect it would be overridden by high RPM for safety… you can read about it in the appendices of the MD3060 troubleshooting manual… and of course...

Don’t know. Maybe never:), Not a lot of info available on it. But more likely it would override the hold as it approaches idle or some other preset low or high RPM. Like when you select a lower gear with the arrow, if the engine reaches peak RPM, it overrides your selection and upshifts to...

I would be curious what RPM it kicks down from 7-6. unless the TPS indicates to the transmission that you are maintaining speed it would likley downshift somewhere around the peak torque point 1500-1600RPM? The procedure is a little buried, but you do 5 power on-power off cycles in...

Hey when you ran the TCM thru the routine to relearn 0-100% TPS and relearn the shift points, did you first confirm the pedal rotates the governor linkage between the idle and full RPM stops? AND fully warm up the engine and trans before you began?

Yours is a WTEC2, i have seen some screenshots of the trans controller programming, and it appears that auxiliary hold was possibly enabled on non winch trucks as a default auxiliary input function(Wire 153 to signal ground 161B). When enabled this overrides the normal shift parameters and...

Yep, split silicone pipe joiner or loose hose clamp between turbo outlet and manifold inlet…

It would be nice to be able to reprogram the shift points, or manually upshift on the Allison. Awesomeness, have you ever checked/calibrated your TPS?

Yes the 3.07 swap lowers the engine, trans and driveshaft RPM for a given highway speed.

When a front gladhand freezes it makes that line act like an air storage tank on one leg of a 2way check valve. In the case of the park brakes, you apply air to one leg of a 2way. It passes thru that to compress the park springs and RELEASE the brakes. If the other 2way leg isnt vented, air...

Rare breed...