Allison transmission problems

No movement in any gear (total loss of transmission fluid, or pump failure): Refill the pan with fluid and look for a leak. If you find one, fix it. For pump failure, check the fluid level with the engine off, then start the engine and recheck. If the level doesn’t go down when the engine is running, the pump has failed.

Sep 25, 2023 · Allison Transmission is a renowned manufacturer of commercial duty automatic transmissions. However, some models of the Mt653 transmission have been known to have issues. Common problems with Allison Mt653 include hard shifting, delayed engagement, and premature failures. 6194 posts · Joined 2005. #6 · Oct 9, 2013. Sounds like you got the wrong tranny then. The 1000 and 2400 use different gear ratios if I'm not mistaken, and the TCM should have coded as soon as you started moving about gear ratio incorrect. 1995 K2500 SUBURBAN, LB7 DURAMAX/ALISON powered.The following signs may apply to all transmission models and brands and are not limited to just the Allison 3000 or other Allison models. 1. Strange noises coming from the engine or transmission- this happens often and you may hear humming, grinding, whining, and buzzing. The repair will depend on what is wrong. 2.Common transmission problems include transmission fluid leaks, worn or damaged torque converters, solenoid damage and clutch problems. Low fluid levels or an improper transmission ...It’s not a problem, but something you need to be aware of if you’re accustomed to driving an AMT, which won’t begin moving forward until the throttle is engaged. ... Transmission: Automatic Allison TC10 w/ fifth-generation controls; 10-speed with overdrive, incl. oil level sensor. Drive axles: Meritor MT-40-14X-4CFR single … Solution – Install an aftermarket transmission shield. TSB 06-07-30-013 – Shudder in 6th gear – Allison 1000 Transmission. 2006 Chevrolet Silverado 2500HD – 2006 GMC Sierra 2500HD. Problem – Owners may experience a shudder occurs in 6th gear in 4Hi between 46 mph (74 km/h) and 49 mph (79 km/h). Allison Transmission is a renowned manufacturer of commercial duty automatic transmissions. However, some models of the Mt653 transmission have been known to have issues. Common problems with Allison Mt653 include hard shifting, delayed engagement, and premature failures.

The Insider Trading Activity of Landry Allison on Markets Insider. Indices Commodities Currencies StocksIn the event of a part failure in an Allison transmission, the best option is usually to take advantage of the warranty. However, the three (3) most common issues are actually failsafe: Incorrect hookup. Limp mode (in the Allison 1000 model) TCM module problem. Let’s take a brief look at each….Solution – Install an aftermarket transmission shield. TSB 06-07-30-013 – 2006 Chevrolet Silverado 2500 HD Allison 1000. Problem – Owners may experience a shudder occurs in 6th gear in 4Hi between 46 mph (74 km/h) and 49 mph (79 km/h). Solution – Reprogram the TCM with TIS version 6.0 or higher.Does anyone have a 1993 American Eagle, Cummins engine, Allison transmission, that knows the location of the ECU, etc.? I sent Spartan (the ...However, you may actually be experiencing a failsafe instead. Which of these potential problems apply to your situation? Limp mode (Allison 1000 model) Hooked up …The pressure manifold switch and the NSBU work together and verify each other so codes P840-P876 and P1709-P1714 which are pressure manifold codes, can also point to a faulty NSBU. If all looks well and you’ve checked the simple things like power and grounds, the battery etc. then STOP, and try this next. Keep a new NSBU handy as a …The Allison is superior in every way. It's buttery smooth, smart, burly, and a true medium duty transmission. 2003 Ram 2500 HO QCSB 48RE 4x4, FASS 100 with Fleece SureFlo, Fleece Fuel Filter Delete, EMF Steering Shaft Bushings, Calibrated Power MM3 Tuning, Flo-Pro 4" exhaust, S&B Intake, Edge CTS3 W Pyro, BD Deep Pan.What are the common problems with Allison transmissions? Allison transmissions commonly experience issues such as harsh shifting, slipping gears, limp mode activation, and reverse gear failures. It’s important to address these problems promptly to avoid further damage or safety concerns.

Why these Symptoms are Serious. 7 Common Allison Transmission Shift Selector Problems & Troubleshooting. Problem 1: Shift Selector Display Not Working. Why It’s a Big Deal. The Usual Suspects: Common Causes. The Quick Fixes: DIY Solutions. Problem 2: Shift Selector Stuck in One Mode. The Gravity of the Situation.Some signs of transmission problems are the transmission refusing to go into gear, the smell of burning transmission fluid and noises coming from the transmission when the car is i...If your transmission fluid is low, the transmission may not be able to shift correctly. Plus, you can see and smell the fluid to tell if it is burnt. Add fluid to the correct level if low. Figure 3. Check your transmission fluid dipstick. If fluid level is acceptable, move on to Step 5. If fluid is burnt proceed to Step 4.Solution – Install an aftermarket transmission shield. TSB 06-07-30-013 – Shudder in 6th gear – Allison 1000 Transmission. 2006 Chevrolet Silverado 2500HD – 2006 GMC Sierra 2500HD. Problem – Owners may experience a shudder occurs in 6th gear in 4Hi between 46 mph (74 km/h) and 49 mph (79 km/h).Applications For the TC10. The TC10 will not replace Allison’s traditional 6-speed 4000 and 4500 RDS (rugged duty series) automatics that see on/off-road service in straight trucks. The 4000 HS ...May 22, 2023 · The following signs may apply to all transmission models and brands and are not limited to just the Allison 3000 or other Allison models. 1. Strange noises coming from the engine or transmission- this happens often and you may hear humming, grinding, whining, and buzzing. The repair will depend on what is wrong. 2.

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Fluid contamination: Contaminated transmission fluid can hinder the smooth operation of the GM 10-speed transmission. It can be caused by water intrusion, dirt, debris, or other foreign substances entering the transmission system. Regular fluid inspections and maintenance can help prevent fluid contamination.Check with your Allison Transmission service outlet for the currently applicable publication. Additional copies of this publication may be purchased from authorized Allison Transmission service outlets. Look in your telephone directory under the heading of Transmissions — Truck, Tractor, etc. Take time to review the Table of …Nick and Joey give us a basic run down of the Allison 1000 Transmission. They also discuss common questions received by many customers and enthusiasts. Die...Allison AT 542 Transmission Question. Hello All, This has probably been discussed in the forum before but here goes. The AT 542 is a non lock torque convertor tranmission and is coupled to a Cummins 5.9L 24V engine rated @ 210 hp. I believe that it is possible to do a transmission swap to a lockup torque convertor type tranny such as …There won’t always be a clear cause of the problem. The best thing you can do is learn to identify the warning signs that your Allison transmission needs a little work. Some of …Jan 18, 2016 · Check transmission operation; if it seems to be working properly, check the appropriate sensor inputs. If the transmission is slipping, repair as needed. Well there you have it: the most likely causes and possible cures for the most common problem plaguing the Allison LCT1000 transmission: inhibited shifts or gear ranges.

75 posts · Joined 2010. #1 · Jun 18, 2010. Hey guys, new to the forum here. Had a quick question. Today on the way home from work I got on it kinda hard and at about 60mph it felt like the trans was slipping. The rpm would keep increasing but the truck would not accelerate for a split second. Then when I had come to the next stop about 8 ...Help and troubleshooting guide for the most common Allison Transmission Problems, and what may have activated limp mode.Here are 6 shift selector problems most Allison transmissions come with: 1. Delayed shifting- the source for this issue is twofold. One, there is a problem with the air intake. …Hearing unusual sounds while starting or accelerating. A strange odor. Check Engine Light Turned On. Difficulty To Shift Gears. The signs are pretty similar for Allison 2000, 3000 and even the newer series. So, no matter which version of Allison Transmission you have in your vehicle, these crucial failing signs will be relevant.Allison DOC® Premium is designed for use on 1000 Series™ and 2000 Series™, 3000 Series™ and 4000 Series™ and TC10® Product Family transmissions, and transmissions using CEC5/CEC3/CEC2/CEC1 controls. Allison DOC® Premium (H 40/50 EP™) is designed for use with Allison’s H 40/50 EP™ Systems. It is capable of reading …Nick Priegnitz, CEO of DuramaxTuner, discusses the 10-Speed Allison Transmission found in the 2020+ 6.6L Duramax L5P. There is a lot of chatter out there abo...Aug 13, 2014 · It sounds like you might have found the problem with the worn orange wire. Might just need to simply search for any "codes" and then clear any codes that pop-up. Once clear codes, should remove limp mode. 2024 GMC AT4 HD L5P (daily) 2007 GMC LBZ (race truck) Thanks to A-Star Diesel Performance (George Loewen) Like. Allison 1000 Transmission Limp Mode Fix: Fixing the limp mode of the Allison 1000 transmission can be done in two ways. The first method involves manually diagnosing and addressing the cause of the limp mode. To reset the limp mode, turn off the engine and restart it. If the limp mode is still present, you should check the fluid level and ...First, a quick answer: The 1998 – 2007 Silverado 2500 / 3500 has a 4- or 5-speed automatic or manual transmission. The 2007 – 2013 Silverado 2500 / 3500 has a 4- or 6-speed automatic and a 4-speed transmission for the hybrid. Between 2013 – 2018 the Silverado had a 6- or 8-speed automatic. The fourth-generation has either a 6-, 8- or 10 ...The GMC Sierra 3500 HD was GMC’s answer to the heavy duty pickups from Ford, Dodge and Chevrolet. Early versions were equipped with the 4L80E transmission, and the 6L90 6-speed in later models. The GMC Sierra 3500HD 6.6L Duramax Diesel got the Allison 1000 transmission. But they aren’t without their problems though, so let’s look at some …

No problems till 165,000 miles when I got big tunes and torched the converter. Otherwise, the NSBU switches are shit if not updated, but thats not a big deal, and not really just an 01-02 problem. 2002 CCSB 4x4 LT. Dark charcoal exterior/black leather interior. 20x9 Death Metal Novakanes. 33 12.50 20 MT's.

Feb 6, 2023 · Here are 6 shift selector problems most Allison transmissions come with: 1. Delayed shifting- the source for this issue is twofold. One, there is a problem with the air intake. Two, there is a problem with the transmission fluid. Check for leaks and keep the fluid topped up for better shift results. 2. Allison DOC® Premium is designed for use on 1000 Series™ and 2000 Series™, 3000 Series™ and 4000 Series™ and TC10® Product Family transmissions, and transmissions using CEC5/CEC3/CEC2/CEC1 controls. Allison DOC® Premium (H 40/50 EP™) is designed for use with Allison’s H 40/50 EP™ Systems. It is capable of reading …Transmission Overheating: Prevention is Key. Transmission overheating is a critical issue that can significantly impact the life and performance of your Allison 1000 transmission. When your transmission operates at high temperatures, the fluid can break down, leading to decreased lubrication and increased wear on internal components.This is usually in relation to the 10-speed Allison transmission duramax problems. The bulk of these complaints can be traced down to trivial factors. Some include inadequate transmission fluid levels, dirty transmission filters, or worn-out clutch packs. Whichever the case, the result is the same – Chevy 10 speed transmission problems.3 Common Allison Transmission Problems Copeland International. Ford Mustang 2 3 Ecoboost Engine Swap Wiring Harness And Ecu Kit Convert Loom Ant Steering Electronics Bruno. Allison Hd 4060 Code D 1 00 35 Irv2 Forums. Allison Transmission 24 Volt Control Valve Wiring Harness 29543334 Sel Dash. Allison …Dec 6, 2022 · Problems and Fixes! Allison LCT1000. The Allison LCT1000 has been a mainstay transmission for heavy-duty General Motors applications since 2001. They have logged millions of miles behind the 6.6L Duramax diesel and 8.1L gas motors. As a result, the LCT1000 can be found in vehicles ranging from pick-up trucks to motorhomes and dump trucks. trying to educate myself a bit on the new 10 speeds. Ford and gm worked together to design the newish allison 10l1000 . The 10 speed found in the LD gm lineup including the cars/trucks as the 10l90 . Ford has the 10 speed in the 2020 1.5 and 2 ton trucks but gm still pushing the allison 6 speed... www.duramaxdiesels.com.U0101. The U0101 code is associated with lost communication between the Transmission Control Module (TCM) and other system components. This can result in various transmission issues, including limp mode and gear shifting problems. Some potential causes for this code can include wiring problems, a faulty TCM, or even other …Allison transmission problems. D1 is the first of 5 stored code positions, D1-D5. Codes are total of 4 digits (2 digits main and 2 digits sub codes) Display will cycle thru all 3 positions automatically. If no stored code it will display D1, - -, - -. If theres a code on D1 the - - will be the code.

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Here are 6 shift selector problems most Allison transmissions come with: 1. Delayed shifting- the source for this issue is twofold. One, there is a problem with the air intake. …cowdoc. 1183 posts · Joined 2004. #16 · Mar 27, 2015. Valve body will need to be replaced. The Dealership that replaced the solenoid was instructed by GM to replace the valve body, but they didn't. 2018 CC SWB Sierra SLE 2500HD Z71. Banks Deringer and CAI. CP4 failure: 2015 GMC Denali SRW 3500HD 4x4.GM, which represents the owners of various GM vehicles who have one of two models of eight-speed automatic transmissions — the GM 8L90 or 8L45 — made between 2015 and March 1, 2019. The ...Transmission in default 3rd or 5th; ECM/PCM compatibility DTC (Usually P0614) SES light; Traction control and park assist inoperative; Transmission temperature and gear …07-26-2015, 08:56 AM. htripp. Junior Member. Join Date: Jul 2015. Posts: 4. Allison transmission 3060 problems. I have an older 1995 holiday rambler navigator that has the md 3060 trans. It just started to go in and out of gear with the touch pad going blank. When this happens it goes into neutral and nothing works.Chevrolet diesel trucks use the 6.6 liter Duramax engine, which is prone to intermittent fuel starvation, water pump failure, overheating, injector failure and injector harness cha...Small problem became a big oneAllison 4500 RDS problems do occur, which is why it is important to be aware of these issues and what can be done. Read this post to learn more. ... Generally, Allison transmissions are well-made and custom-designed to meet the heavy demands in various industries. Much of the problem with it is in the part failure, this is why it is …Feb 17, 2023 · February 17, 2023. When an Allison transmission won’t shift into gear, it’s often due to issues such as low or degraded transmission fluid, malfunctioning shift solenoids, a damaged valve body, or electronic control module malfunctions. Addressing these concerns promptly and ensuring regular maintenance can restore your transmission’s ... The problem is a little less urgent now, as I have given up on getting this truck back on the road anytime soon. 2002 2500HD 8.1 4x4 gas with Allison transmission. On a recent road trip, no load, i started having some tranny issues, once the tranny got good and warm.Mar 24, 2016 · Usually, it throws codes relating to the transmission solenoids. This last time, it threw codes for trans fluid pressure sensor circuits. When the "Range Shift Inhibited" state occurred, it threw codes: P0700 (Transmission Control System (MIL Request)) P0843 Transmission Fluid Pressure Sensor/Switch A Circuit High. ….

The Allison VIM is marked Allison and only has a single cover. Be sure to check the fuse directly at the batteries first they are very bad about popping,or they could have left the power or ground wire off at the batteries which would kill the power to the Allison controls. Bill. Allisonforeman, Transmission foreman. Category: Heavy Equipment.U0101. The U0101 code is associated with lost communication between the Transmission Control Module (TCM) and other system components. This can result in various transmission issues, including limp mode and gear shifting problems. Some potential causes for this code can include wiring problems, a faulty TCM, or even other … Shift Selector Problem. One of the most common issues with GM's 10-speed transmission is the shift selector problem. This occurs when the vehicle unexpectedly shifts into a higher or lower gear without any input or speed change. Symptoms include mismatched indicators and gear issues. Solutions include checking and refilling transmission fluid ... The transmission options that were available to the 2005 Silverado were as follows: MG5 – This is the NV3500 manual transmission. It is the only manual available for the 2005 Silverado. M32 – This will be the 4L65E transmission, which is an upgraded version of the 4L60E. M30 – This is the 4L60E automatic transmission.History + Heritage. Throughout our long history, Allison Transmission has been a leader in innovation, creativity and continually pushing toward new advances in technology. Our heritage, starting in 1915 with James Allison, has been strong and steady throughout the decades that we’ve been creating fully automatic transmissions.The main issue plaguing the Allison 10-speed is the torque converter, according to NextGen Diesel. Or more specifically, the lockup mechanism. Ford’s version, which has proven …Allison AT 542 Transmission Question. Hello All, This has probably been discussed in the forum before but here goes. The AT 542 is a non lock torque convertor tranmission and is coupled to a Cummins 5.9L 24V engine rated @ 210 hp. I believe that it is possible to do a transmission swap to a lockup torque convertor type tranny such as …Allison 1000 Transmission Problems. Limp Mode; The Allison 1000 Transmission system is one of the most powerful ones from the company. This is why it is mostly used in larger vehicles like motorhomes or RVs. However, you should note that there is also a flaw with these systems. While this problem is quite rare and not a lot of people …May 24, 2018 ... Allison 3000 automatic transmission stuck in first gear. See the full write up here http://www.mechanicshub.com/toolbox/allison-auto/.Posts: 2. I am new to the forum & this is my first post. Have a 2000 Winnebago Journey with a Cummins ISB 275 with an Allison MT643 4 Speed Transmisson. When traveling in a 45 MPH speed zone with D selected the transmission will shift back & forth between 3&4 (very hard shifts). My solution has been to put the … Allison transmission problems, trying to educate myself a bit on the new 10 speeds. Ford and gm worked together to design the newish allison 10l1000 . The 10 speed found in the LD gm lineup including the cars/trucks as the 10l90 . Ford has the 10 speed in the 2020 1.5 and 2 ton trucks but gm still pushing the allison 6 speed... www.duramaxdiesels.com., cdh7917. 348 posts · Joined 2017. #7 · Sep 10, 2019. Count me in the same group as the others. The 10 speed has been great to drive with. And mine is still learning, so it's getting better and better each time. Shifts are hardly noticeable and it's smooth as silk! 2021 GMC Sierra 3500 AT4HD. Save Share., Solution – Install an aftermarket transmission shield. TSB 06-07-30-013 – Shudder in 6th gear – Allison 1000 Transmission. 2006 Chevrolet Silverado 2500HD – 2006 GMC Sierra 2500HD. Problem – Owners may experience a shudder occurs in 6th gear in 4Hi between 46 mph (74 km/h) and 49 mph (79 km/h)., Have just had a problem with a 2004 Beaver Marquis Allison 4000 6 speed trans at 42000 mi. When coming to corner of highway and using engine ..., Usually, it throws codes relating to the transmission solenoids. This last time, it threw codes for trans fluid pressure sensor circuits. When the "Range Shift Inhibited" state occurred, it threw codes: P0700 (Transmission Control System (MIL Request)) P0843 Transmission Fluid Pressure Sensor/Switch A Circuit High., Allisonman, I have a problem with my Allison V730 transmission. It starts out running fine and shifting the way it is supposed to but after it ..., 1. Allison 6 Speed Transmission Problems: Faulty Shift Selector. Allison’s 6-speed transmission has problems with shift selectors and delays responses. It is possible that the gear won’t work correctly when you increase the vehicle’s speed and change gears. This is because of a faulty gear or shift selector. , Allison 4500 RDS problems do occur, which is why it is important to be aware of these issues and what can be done. Read this post to learn more. ... Generally, Allison transmissions are well-made and custom-designed to meet the heavy demands in various industries. Much of the problem with it is in the part failure, this is why it is …, U0101. The U0101 code is associated with lost communication between the Transmission Control Module (TCM) and other system components. This can result in various transmission issues, including limp mode and gear shifting problems. Some potential causes for this code can include wiring problems, a faulty TCM, or even other components interfering ..., Pain Signal Transmission - Pain signal transmission relies on sensory fibers in the dorsal roots to transmit pain to the spinal cord. Learn more about pain signal transmission. Adv..., Allison Transmission Forum - A forum for discussion of the Allison Transmission as related to RV usage. ... When "Malfunction Indicator Light" is NOT a trans problem. Rcdukes. 12-29-2023 05:29 PM by Rcdukes. 5: 950 : Allison 3000 speed sensor issues. Samsquatch. 12-27-2023 08:42 PM by Skip426. 7: 1,892 :, Common Allison AT545 Transmission Problems. One common problem will be the shifting aspect. When cold the transmission can shift fine but when warmed up, it may not get into 3rd or 4th very easily. The source of this problem could be obstacles building up in the governor, modulator, or valve body passages., Chevrolet diesel trucks use the 6.6 liter Duramax engine, which is prone to intermittent fuel starvation, water pump failure, overheating, injector failure and injector harness cha..., Common Allison 3000 Transmission Problems. 1. Service Indicator Light On. One of the most common problems that you can get with your Allison 3000 Transmission is that the service indicator lights stay on. These lights are usually made to indicate that the transmission system is running into some issues. However, there are …, Limped it to the Allison Transmission shop and they looked at it, charged me $400.00 to tell me to take it to GM Dealership, for electrical diagnostics., as while they had it it will no longer send codes to the OBD ... Replaced the ignition switch, and cured the problem so far (16000 miles). 2004 LB7 - FASS 150 & CAT Fuel Filter 120k miles ..., 07-26-2015, 08:56 AM. htripp. Junior Member. Join Date: Jul 2015. Posts: 4. Allison transmission 3060 problems. I have an older 1995 holiday rambler navigator that has the md 3060 trans. It just started to go in and out of gear with the touch pad going blank. When this happens it goes into neutral and nothing works., The cost of repairing an Allison 1000 transmission can vary widely depending on the issue at hand. Minor repairs like fixing a fluid leak or replacing a sensor can range from $100 to $500. More severe issues like a torque converter replacement or complete rebuild can run into the thousands., Dec 6, 2022 · Problems and Fixes! Allison LCT1000. The Allison LCT1000 has been a mainstay transmission for heavy-duty General Motors applications since 2001. They have logged millions of miles behind the 6.6L Duramax diesel and 8.1L gas motors. As a result, the LCT1000 can be found in vehicles ranging from pick-up trucks to motorhomes and dump trucks. , Dec 6, 2022 · Allison 6 Speed Transmission Problems Any modern vehicle can run at a controlled velocity because of these three main components—the engine, the transmission system, and the drivetrain. The transmission system is essentially part of the drivetrain, but when examining a vehicle’s mechanism and fixing speed-related issues, you must treat it ... , The Allison 1000 transmission behind a Duramax is entirely different in the way it shifts. Every gear is positively held with no overrun clutches and has to be released before another gear is engaged or the transmission will bind. ... Sometimes there is a known problem that is addressed in a TSB and the dealer can do what the TSB says. …, The battery voltage is important, but more important than that is the voltage the alternator is putting out. With engine running you should be measuring 13.5-14.4 volts at the battery. The alternator might be tested fine in a bench, but your wiring turning in n your alternator might be a problem., transmission fluid levels, read diagnostic codes and prognostic information . This manual will help you understand shift selector readouts and enjoy long operation of your Allison Automatic . Diagnostics The Transmission Control Module (TCM) of your Allison Automatic monitors the transmission’s electronic controls; and when a problem ..., FuelSense® 2.0 is the fuel-savings solution made for your fleet. A unique set of software and electronic controls ensures you’ll see quantifiable fuel savings of up to 6% without sacrificing the performance, reliability, durability and productivity Allison Transmission has always delivered. Download the FuelSense brochure., Allison Transmissions. How To Check & Clear Trouble Codes Without A Scan Tool. In this video I have a Heavy duty truck with an Allison automatic transmission..., The Stator- this is the part that controls the stall speed and it is not very strong. To fix it you need to make one out of stronger metal. 2. Added power problems- due to the design the transmission is only built to handle so much power. When it is asked to handle more it will not do that., Transmission in default 3rd or 5th; ECM/PCM compatibility DTC (Usually P0614) SES light; Traction control and park assist inoperative; Transmission temperature and gear …, The battery voltage is important, but more important than that is the voltage the alternator is putting out. With engine running you should be measuring 13.5-14.4 volts at the battery. The alternator might be tested fine in a bench, but your wiring turning in n your alternator might be a problem., ALLISON 1000 FEATURES: * The Allison 1000's transmission control module (TCM) receives information from the engine, torque converter turbine, output speed sensors, pressure switches, and range ..., Mt 643 Allison transmission. Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. I have a 92 Monaco motorhome with a Cummins 12 valve and a Mt643 allusion 4 speed trans. I am having issues with the trans I believe. We left on a trip and about 3 hours into trip cruising along …, The cost of repairing an Allison 1000 transmission can vary widely depending on the issue at hand. Minor repairs like fixing a fluid leak or replacing a sensor can range from $100 to $500. More severe issues like a torque converter replacement or complete rebuild can run into the thousands., Feb 9, 2021 ... Allison 2000 transmission problem. 3.2K views · 3 years ago #truck_diagnostic ...more. Truck Diagnostic. 2.93K., What are the common problems with Allison transmissions? Allison transmissions commonly experience issues such as harsh shifting, slipping gears, limp mode activation, and reverse gear failures. It’s important to address these problems promptly to avoid further damage or safety concerns., The 2006 to 2015 GM Duramax diesel are prone to Allison TCM failure issues. The most common issue is U0101 “loss of communication to the transmission control module”. Hard transmission slamming from gear to gear, range shift inhibited and gear indicator not displaying, and on the newer trucks transmission temperature not displaying.