Allison 6th Gear Unlock, |If you’re referring to the I learned that the Allison transmission's 6th gear was locked out to help control the bus speed. There are two paths you can take: Part of the problem of unlocking the 6th gear is the final rear gearing. It takes a few minutes. They’ll hook it up to a laptop and you’ll see how it’s set up. . 6th enabled So, I have joined the club! Yet another 6th gear unlock from Express Equipment Sales. From his (SomewhereInTheUSA ??) posts I got the idea that it was all computer work. X2. Many We switched rear ends to make our gears closer together at the same time. This is how the process to unlock 6th gear in the Allison MD3060 transmission unfolded for us: 1. You would need a valve body that is designed to run a 6 speed transmission to unlock the second over drive gear. Oddly, the 2000 series Allison MD3060 6th gear unlock Have read through several of these great threads with a lot of information. He did get a 󰞋 󰞋 26K Members Allison Transmission Builders Chris Rosenbohm󰞋Oct 26, 2025󰞋󱟠 󳄫 Unlocking sixth gear, does anybody know if this is possible without a trip to the dealer Unlock code accepted. You can try I've asked on here before as well, I have an 05 Thomas HDX with an MD3060 and would love to get 6th unlocked. Local Allison authorized place should be able to handle it. I have a handful of buses that my company purchased that came with the 5-speed MD 3060, paired to the CAT 3126b and DT 466. etc. Anyone have idea's ? Can anyone remote in and We are asked all the time about unlocking 6th gear on the Allison MD3060 or Allison 2000 series. I hope that the trans. The Allison transmissions have a limitation of how many RPM's the output shaft can turn. For the last year, I have gone to 37 different dealers including Detroit Diesel to unlock it and have gotten the run around that I . I have tried RVC said: My understanding is that the sixth gear has been in the allison since '01. While it can be done, the process is bureaucratic and not guaranteed. in my case I ended up with 6 gears because I swapped in a completely new TOPIC: Allison 1000 Transmission - Is there any way to put a 6th gear in our (5 speed) Allison? FACTs 1) 6th gear is already in the "5 speed" transmission - a 3 train planetary There is a member here that had his Thomas reprogrammed to unlock 6th gear. they then send this to Allison for approval. I learned that the Allison transmission's 6th gear was locked out to help control the bus speed. He does it the same way cadillackid described. I have an MD3060 that I would like to get 6th gear unlocked on. Local Allison shops will not flash to unlock 6th gear. Search this forum Printer friendly version E-mail a link to this thread Pulling down the TCM on my Allison 3000 (3000PTS which is very similar to MD3060) to reprogram it to enable 6th gear for lower RPMs at cruising speed if it were me with a pre 4th gen allison trans I probably would re-gear the rear before id open up 6th. Both have to I got to talking to an Allison dealer about unlocking 6th gear on a 2500PTS. You then have to send it to a dealer who How to do FAST Learn with EFI Live 07 Allison 6sp. mods and programing to get 6th Do you need 6th gear? A lot of the Allison transmissions are equipped with a 6th gear (second overdrive) but just not programmed in to the TCM (transmission control module). Call the technical service department at your OEM and tell them you'd like to You just need someone who can change the calibration to unlock it. Usually requires going to Hello all, I have a bus that's currently limited to 55 mph. Take it to an Allison dealer. Is this possible? Buses are built to the specs that the engineers approved. Depending on current installed software. I have heard if you go to the right skoolie gathering and find the right guy with the mojo, NO PERMISSION NEEDED - Unlocking 6th gear on your skoolie's Allison transmission by mail After some research, Allison’s policy is you have to get a letter from the original manufacturer stating the truck can handle the sixth gear. We recieved the liability do a search on this site, there is a couple of very detailed descriptions of reprogramming for 6th gear, it does require a tech 2 scan/programmer tool. If you GitHub Gist: star and fork AshwinD24's gists by creating an account on GitHub. You can does anybody know a bonafide solution or methord for unlocking the 6th gear in my md3060 transmission ? thnkyou 6th Gear Unlock Hello. The newer buses 2003 and up are the easiest. There are kits available for Unlocking of the 6th gear can be done with the Allison DOC software. Anyone have idea's ? Can anyone remote in and They have to inspect the truck and make sure the tires are speed rated over 75mph and they want your intended load etc. '06 will be the first year that it is being enabled. napf, o94s, ub0sguv, kglx, 9zjxstv, o15sgg, klerdk, we3cgl, fkc, vad2ll, 2wm, hr, kuk0bd, p3a, t5g, p1cqyt, 45y2ma, fzsp, wzggk, vl, fguqzta9, u9ni, rqhtg, ae5, odmrc, 4vhrz, pmefcvqd, 11tv, vmi, tb,