Allison transmission problems - Active member ... It was the "trimmer valve". If anyone else experiences the same issues, this is probably the culprit. I pulled the valve body and with the help ...

 
Allison transmission 3060 problems: htripp: Allison Transmission Forum: 11: 07-26-2015 11:19 AM: Allison Expert on the Power Train Garage (Allison Transmission) Forum: hzjcm8: Monaco Owner's Forum: 3: 04-25-2011 05:50 AM: allison 1000 transmission problems: rednlh: Workhorse and Chevrolet Chassis Motorhome …. Sara donchey

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 …Jun 13, 2021 ... Allison Transmission Data Plate Troubleshooting quick Guide. Help a Veteran Owned Business by subscribing!! AM PM Mobile Semi Truck Repair ...2021 2500HD Transmission Problem. My father in law has a 2021 GMC with around 5,000 miles. Empty and loaded the transmission is hard up and down shifting. It’s been doing it since new. It doesn’t always do it but it happened 4 times yesterday on a 467 mile trip. I have a 17 PStroke and don’t know much about Allison’s but what could be ...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...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.Warranty coverage and relevant maintenance information for each transmission can be found here using the transmission serial number. Repair Assistance Technical Support The Allison Technical Assistance Center (TAC) can be reached at 1-800-252-5283.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. 8359 posts · Joined 2015. #6 · Jun 14, 2023. If various components aren't getting good power or ground (computers, solenoids, whatever), then anything can happen. Diagnosis is what tells you the problem. But it's not cheap to do. 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd.Junior Member. Join Date: Feb 2012. Location: Debary Florida. Posts: 6. Trans Com Failure update. I had the motor home into Freightliner for the trans com failure. They determined it was the Allison Transmission speed control that failed. Replacement was about 3 grand. Surprised the coach only has 65,000 miles on it.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 ...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...Oct 11, 2023 · 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. Jun 18, 2010 · 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 ... The 10L1000 is a 10-speed heavy-duty transmission that shares some design features with its smaller light-duty 10-speed cousins. However, although the 10L1000 looks much like a 10L80, it is much larger with a higher torque capacity. In addition to being a more robust unit than the 10L80, it is much heavier, weighing in at over 360 pounds.Sep 22, 2013 · 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 Contents and the ... 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.In this video I have a look at a 2009 GMC 2500 that is exhibiting some really strange transmission issues. It only seems to act up once the TCM (mounted on r...Jan 16, 2021 · Allison transmission problems. Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. I have a 2000 Allegro Bay 5.9 cummins with a Allison Transmission. We just bought this and on our first trip two miles from the house the transmission went into shift inhibit mode and will only go into reverse. 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.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 ...In 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….There might be more than one code. The unit holds up to five. First code will start with "d" "1" and so on to "d" "2", etc. if any. Press the same button again until returning to the "N" "N" display. See the video below. The folks at Transmission Instruments said the symptoms I had could be temperature sensitive.The 10L1000 is a 10-speed heavy-duty transmission that shares some design features with its smaller light-duty 10-speed cousins. However, although the 10L1000 looks much like a 10L80, it is much larger with a higher torque capacity. In addition to being a more robust unit than the 10L80, it is much heavier, weighing in at over 360 pounds.Like other components, there 6L90 transmission was plagued with several issues, which is almost the same as the 6L90e transmission problems. So here are common 6L90 transmission problems and ways to fix them. Failure of the reverse gear to engage. A common 6L90 problem is the inability of the reverse gear to engage when selected.All Duramax engines came supplemented with the Allison 1000 transmission. At the start, the Duramax LB7 had an automatic 5-gear Allison transmission. From late 2004. they switched it to a 6-gear Allison automatic transmission. Duramax & Allison experts agreed that switching to a 6-gear …Sep 22, 2013 · 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 Contents and the ... Step 1: First, check whether the output speed sensor has got unplugged from the sensor. If it is, connect that up. Step 2: Inspect whether there is any faulty wiring in the transmission …Allison Transmission Forum ... When "Malfunction Indicator Light" is NOT a trans problem. Rcdukes. 12-29-2023 05:29 PM by Rcdukes. 5: 950 : Allison 3000 speed sensor ...Allison Transmission Data Plate Troubleshooting quick Guide.Help a Veteran Owned Business by subscribing!! AM PM Mobile Semi Truck Repair Tips and Tricks htt... Allison Transmission Forum ... When "Malfunction Indicator Light" is NOT a trans problem. Rcdukes. 12-29-2023 05:29 PM by Rcdukes. 5: 950 : Allison 3000 speed sensor ... 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.Allison Transmission Problems. looking for answers on problems with my allision trans. clunks when down shifting when stopping its a at 542n 3 speed ... I'd call around your area and look for an Allison Transmission dealer/distributor. Possibly check with your local school district, find out what transmissions they are running in their …Jan 16, 2021 · Allison transmission problems. Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. I have a 2000 Allegro Bay 5.9 cummins with a Allison Transmission. We just bought this and on our first trip two miles from the house the transmission went into shift inhibit mode and will only go into reverse. Nov 26, 2022 · 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... 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. Jun 22, 2022 · But issues can occur, as we discuss. The Allison 10L1000 10-speed transmission is the heavy-duty automatic for Chevy Silverado and GMC Sierra HD trucks. That means it is a stout, though complex transmission, able to take the added burden the Duramax diesel engine puts out. It has the highest relative torque capacity of any full-size truck made. 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...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 ...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. The Allison Transmission 1000 and 2000 Product Families Troubleshooting Manual is a comprehensive guide that provides technicians with detailed information and troubleshooting procedures for diagnosing and resolving issues related to the Allison 1000 and 2000 series transmissions. This manual serves as an invaluable resource for …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 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.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 ...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.Many Allison transmissions have a common problem, and the 1000 series is no different; oil does not adequately reach the C3 clutch pack of the transmission. Fortunately, there …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.Nov 4, 2019 · Allison Transmissions on GM Trucks from 2006-07 had to get TCM programming modification, according to an official letter from the car manufacturer. ... You should understand there is a problem if ... This causes many failed Allison Transmissions to “sneak up” on DuraMax owners with actively functioning Allisons. As such, we will progress to analyzing the problems of this transmission, and how to understand, prevent and resolve them. Problem #1 - The Torque Converter3,312. Location. Lake Havasu City, AZ. I broke down on I-5 Saturday when my engine simple quit. I coasted to the side and tried to restart the diesel engine. I had a Trans Check light on and the engine would not crank at all. My problem has been narrowed down to not having power to the shift console so that it can tell the engine computer that ... 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 ... Jun 13, 2021 ... Allison Transmission Data Plate Troubleshooting quick Guide. Help a Veteran Owned Business by subscribing!! AM PM Mobile Semi Truck Repair ...When it comes to the world of NASCAR, few names are as iconic as Bobby Allison. Known for his incredible driving skills and fierce competitiveness, Allison left an indelible mark o...In this video, Eli discusses the Allison series transmissions: the AT545, the MD3060, the Allison 2000, and the MT643. These are the most common transmission...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 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.May 26, 2020 · 2021 2500 GMC Duramax Black Diamond edition 10 Speed Trans Failure, Leaking fluid out of tortue converter cover & low On fluid & cannot fill trans. Owed many Later model GMC HD trucks. No reason GMC built a trk that you cannot service or fill the trans. Dealer will have to tow. Save Share. 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 …This week's episode dives into a new boxed wine startup and how its founders are hoping their product surpasses the category's stigma. Welcome back to Found, where we get the stori...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.This is a complete overview and analysis of the problems that plague the new 2020 and above 10-Speed Allison Transmission found in the new Heavy Duty DuraMax diesel trucks! Read more to discover the problems and solutions of this transmission.Nov 26, 2022 · 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... Mar 21, 2020 ... Share your videos with friends, family, and the world.Shift selector does not display any power on the selector display. Technician has found pins are loose! Replaced new pins and plugged the connector. Power is...Transmission Problems. Nearly all Duramax powered pickup trucks were equipped with the Allison 1000 automatic transmission, with the five-speed version running from 2001 to 2005, and the six-speed starting in 2006 and running until 2019.2021 2500 GMC Duramax Black Diamond edition 10 Speed Trans Failure, Leaking fluid out of tortue converter cover & low On fluid & cannot fill trans. Owed many Later model GMC HD trucks. No reason GMC built a trk that you cannot service or fill the trans. Dealer will have to tow. Save Share.Some of the most common Allison transmission codes include 22 for issues with engine and turbine speed sensors, 14 for issues with oil level sensors, and 65 when the engine rating ...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...Published: April 14, 2021. Complaint: A truck equipped with an Allison 1000 or 2000 Series Transmission has a complaint of slipping on initial forward take-off. Main line pressure is checked and is verified as normal. The transmission is removed and disassembled for inspection, nothing obvious was found that could be attributed to the complaint.3. The TSB: Ram released a TSB to their dealer network on 1/11/2023 which covers this failure. The TSB is # 21-002-23 "K1 Clutch Snap Ring Repair". Under the TSB, ALL 2022 and 2023 3500 pickups and cab & chassis trucks, as well as 4500 and 5500 trucks are listed as potential vehicles to experience the failure. 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. 1. Transmission Fluid. The hard shifting problem is often linked with low transmission fluid levels. Like all transmissions on the market, the Allison transmissions also use transmission fluid that keeps the components lubricated. In addition to that, it also minimizes friction between the moving components of the …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 ...Sales + Service Locator. Allison Authorized services encompass all of the care you need to keep your Allison transmission running smoothly. With nearly 1,400 Authorized Distributors and Dealers worldwide, Allison is committed to providing you with the best resources to care for your Allison transmission. To find an Allison facility near you ...5. Torque Converter Issues. The torque converter is the unsung hero of your Allison 6 Speed Transmission. When it malfunctions, you could be looking at symptoms like shuddering, slipping, or high RPMs without an increase in speed. These problems are often complex and require professional attention.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.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 ...Nov 16, 2020 ... This Allison would eventually reach 280 degrees or so and sometimes go into limp mode. If it sat for a short period it would almost always ...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 Contents and the manual.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 ...Mar 20, 2023 · 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... Junior Member. Join Date: Feb 2012. Location: Debary Florida. Posts: 6. Trans Com Failure update. I had the motor home into Freightliner for the trans com failure. They determined it was the Allison Transmission speed control that failed. Replacement was about 3 grand. Surprised the coach only has 65,000 miles on it. 5. Torque Converter Issues. The torque converter is the unsung hero of your Allison 6 Speed Transmission. When it malfunctions, you could be looking at symptoms like shuddering, slipping, or high RPMs without an increase in speed. These problems are often complex and require professional attention. Learn about the symptoms, causes, and fixes of five common problems with the Allison 1000 transmission, a popular automatic transmission used in many heavy-duty GM trucks. Find out how to prevent or reduce transmission issues by performing regular maintenance and checking fluid levels.May 8, 2023 · 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 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 …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.The Allison Transmission 1000 and 2000 Product Families Troubleshooting Manual is a comprehensive guide that provides technicians with detailed information and troubleshooting procedures for diagnosing and resolving issues related to the Allison 1000 and 2000 series transmissions. This manual serves as an invaluable resource for …Posted December 7, 2015. Thanks Brett, Had fluid change to transynd at 76055 and filters,always ran cool 165 until down shift to 5 gear and temp went up to 260 .Would not shift out of 5 ,turn off restart and put in 6 only free wheeled. Put in 1 and would only move a little. Got code out called Allison.Allison Transmission Data Plate Troubleshooting quick Guide.Help a Veteran Owned Business by subscribing!! AM PM Mobile Semi Truck Repair Tips and Tricks htt...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 …So once you face such a bummer, consult the manufacturer to adjust the size, observe the shift selector’s cable and the overall transmission system. 2. Poor or Low Transmission Oils. Apart from the misalignment issue, delaying in shifting gear is known to be a common issue with your transmission shift selector.

Do you know how to test a torque converter? Find out how to test a torque converter in this article from HowStuffWorks. Advertisement Your car's transmission is having some problem.... Amana dishwasher not turning on

allison transmission problems

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...It will be built in-house by General Motors and simply features Allison branding. The transmission isn’t closely related to the 10-speed automatic found in the 2019 Silverado 1500, as far as we ...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 ...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.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.Signs of GM Allison 10-Speed Transmission Problems. There are many different signs of transmission problems, all of which are important to be aware of — a defective transmission can put the car’s driver and passengers at risk of getting into a car accident. Some of the most common transmission problems GM drivers reported include: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.Mac OS X only: Transmission is an open source, lightweight bittorrent client. Mac OS X only: Transmission is an open source, lightweight bittorrent client. As a first-time Mac owne... 5. Torque Converter Issues. The torque converter is the unsung hero of your Allison 6 Speed Transmission. When it malfunctions, you could be looking at symptoms like shuddering, slipping, or high RPMs without an increase in speed. These problems are often complex and require professional attention. 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.Allison transmission leaking from vent can be a frustrating problem for vehicle owners. Common symptoms include low fluid levels, overheating, and puddles under the vehicle. Low fluid levels can be caused by a leaky seal or a worn-out gasket, leading to overheating and eventually puddles under the vehicle.Sales + Service Locator. Allison Authorized services encompass all of the care you need to keep your Allison transmission running smoothly. With nearly 1,400 Authorized Distributors and Dealers worldwide, Allison is committed to providing you with the best resources to care for your Allison transmission. To find an Allison facility near you ...Feb 10, 2010 ... My father just bought an '02 2500 4x4 with the 8.1 and the allison transmission, it was delivered today from florida. The problem is that ...Sep 5, 2016 · Help and troubleshooting guide for the most common Allison Transmission Problems, and what may have activated limp mode. 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.But issues can occur, as we discuss. The Allison 10L1000 10-speed transmission is the heavy-duty automatic for Chevy Silverado and GMC Sierra HD trucks. That means it is a stout, though complex transmission, able to take the added burden the Duramax diesel engine puts out. It has the highest relative torque capacity of any full-size truck made..

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