Gmc Duramax With Allison Transmission Stuck in 2 Gear 1900 Rpm
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What Transmission Do I Have?
In This Guide
- Vehicle Compatibility – Makes & Models
- Allison thousand Transmission Overview
- Features of the Allison m
- Limp Home Mode
- Weaknesses of the Allison 1000
- Other Data
- Updates to the Remanufactured Allison 1000
- What'due south Included
Replacement Allison chiliad Transmission Prices:
| Transmission | Street Smart Transmission |
|---|---|
| Allison 1000 | 2478 |
Allison yard Applications and Compatibility:
| Model |
|---|
| Chevy Silverado 2500 Hd |
| Chevy Silverado 3500 Hd |
| GMC Sierra 2500 HD |
| GMC Sierra 3500 HD |
Allison 1000 Manual Overview
The Allison 1000, 2000, and 2400 serial of transmissions are made by Allison Transmission in the heart of the auto manufacture, Indianapolis. These transmissions see the most employ in medium- and heavy-duty trucks and other vehicles that have to carry heavy loads.
They are all at least 5-speed transmissions, and some are even six-speed. They take electronic control systems governed by solenoid wire assemblies. The company specializes in commercial vehicle transmissions, which also includes tractor trailers.
The Allison k started its life equally a five-speed that could handle 620 pound-feet of torque. This translates to 841 newton-meters. In 2005, a new version of the manual added a sixth gear, lessening the RPM count by 14 percent at highway speeds. This has the effect of increasing gas mileage, especially good for large vehicles traveling long distances on the highway.
In 2006, the manual received the selection for manual shifting, Coincidental drivers may adopt automatics, simply some drivers similar manual transmissions considering they offering greater control and require less braking. Instead, the engine can be downshifted.
For the 2006 model year, transmission gear pick was introduced. This feature gives the driver greater command over the transmission, enhancing operation when engine braking or less frequent shifting is desired.
Here is the list of Allison 1000 gear ratios, starting from 1 to six and reverse: three.1:i, 1.81:1, 1.41:ane, 1:1, 0.71:1, 0.six:ane, and iv.49:1.
Features of the Allison 1000
The Allison 1000 has a transmission command module that gets a collection of data from the torque converter turbine, the engine, and diverse other parts that work together to provide smooth, efficient shifting. The shift machinery is controlled with a pair of pulsed solenoids located in the valve body of the transmission.
For 3500 cab or chassis trucks, y'all have the selection of getting a power take-off, providing a little more acceleration. Its torque rating is 250 pound-feet. Meanwhile, the main case of the transmission contains the gear train, valve body, park pawl, input retarder, and PTO gear.
The 2006 model of the Allison thousand contains divide modes for alternating weather conditions like low-traction way, suitable for water ice. The other new characteristic, class braking, provided an extra safety option for traveling down inclines.
The Allison 1000 uses a modular design for its example, so it can have parts replaced or repaired individually, and can bargain with 5,000-rpm input shaft speed. Some other modular function is the external filter that makes it far more simple to provide service to the manual. The internal filter should but be removed when the whole manual is replaced.
Also, the Allison 1000 is light for its intended utilize, weighing in at approximately 330 pounds with the PTO gear. This does not include transmission fluid. Incidentally, the Allison 1000 can utilize TranSynd or Dexron-III automatic fluid.
Limp Abode Mode
Drivers who mod their transmissions with aftermarket components have been known to feel the vehicle's so-called limp-dwelling mode. This is a safety feature. Should higher gears of the transmission fail, it locks into third gear, which provides enough torque to travel at slow speeds and go to safe rather than be stranded past the side of the road. Limp home manner activates if the control system detects too much slipping in a short fourth dimension.
Weaknesses of the Allison m
The Allison 1000 works by the concept of adaptive learning. By comparing the average shift time against preprogrammed platonic benchmarks, the transmission can make shifting more efficient. Even so, rapid changes in speed or sporadic acceleration/deceleration prevent this process from occurring and the gear and valve assemblies cannot adapt to fluid pressure increases.
Another cardinal trouble can be an improperly lubricated C3 clutch. The fashion the transmission is set up, this clutch does non get any fluid unless it's done directly. Information technology reduces operation due to article of clothing on the clutch pad and can pb to failure.
Five-speed Allison 1000 transmissions have problems with the C1 and C2 clutches. The pistons that cause these clutches to engage were designed slightly off center, leading to a lack of even pressure level and in turn to uneven wear and early on failure of the clutch plates.
Allison 1000 Transmission Diagnostic Problem Codes | DTC
| Trouble Code | Description |
|---|---|
| P0711 | Transmission Fluid Temperature Sensor Excursion Range/Operation |
| P0712 | Transmission Fluid Temperature Sensor Circuit Low Input |
| P0713 | Transmission Fluid Temperature Sensor Circuit Loftier Input |
| P0714 | Manual Fluid Temperature Sensor Circuit Intermittent P0715 |
| P0715 | Input/Turbine Speed Sensor Circuit |
| P0716 | Input/Turbine Speed Sensor Circuit Range/Performance |
| P0717 | Input/Turbine Speed Sensor Circuit No Point |
| P0718 | Input/Turbine Speed Sensor Circuit Intermittent |
| P0720 | Output Speed Sensor Circuit |
| P0721 | Output Speed Sensor Circuit Range/Performance |
| P0723 | Output Speed Sensor Circuit Intermittent |
| P0729 | Gear 6 Incorrect Ratio |
| P0730 | Incorrect Gear Ratio |
| P0731 | Gear 1 Incorrect Ratio |
| P0732 | Gear ii Incorrect Ratio |
| P0734 | Gear four Wrong Ratio |
| P0735 | Gear v Incorrect Ratio |
| P0740 | Torque Converter Clutch Circuit Malfunction |
| P0741 | Torque Converter Clutch Excursion |
| P0742 | Torque Converter Clutch Excursion Stuck On |
| P0744 | Torque Converter Clutch Circuit Intermittent |
| P0748 | Pressure Control Solenoid 'A' Electrical |
| P0750 | Shift Solenoid 'A' |
| P0753 | Shift Solenoid 'A' Electrical |
| P0755 | Shift Solenoid 'B' |
| P0758 | Shift Solenoid 'B' Electrical |
| P0767 | Shift Solenoid 'D' Stuck On |
| P0850 | Park/Neutral Switch Input Excursion |
| P0897 | Transmission Fluid Deteriorated |
| P0973 | Shift Solenoid "A" Control Excursion Low |
| P0976 | Shift Solenoid "B" Control Circuit Low |
| P0977 | Shift Solenoid "B" Control Excursion Loftier |
| P0979 | Shift Solenoid "C" Control Excursion Low |
| P0980 | Shift Solenoid "C" Control Circuit Loftier |
| P0982 | Shift Solenoid "D" Control Circuit Low |
| P0983 | Shift Solenoid "D" Control Excursion High |
| P0984 | Shift Solenoid "Eastward" Control Excursion Range/Operation |
Allison 1000 Technical Service Bulletins | TSBs
TSB 14043 – Thrust begetting failure – Allison 1000 Manual
2012 Chevy Silverado HD – 2012 GMC Sierra HD
Trouble:
Certain 2012 Chevrolet Silverado 2500HD / 2012 Chevrolet Silverado 3500HD and 2012 GMC Sierra 2500HD / 2012 GMC Sierra 3500HD trucks equipped with the Allison one thousand 6-speed automatic manual (MW7), may take been congenital with an incorrect transmission thrust begetting. Over time, this bearing could neglect, resulting in noise and poor transmission operation.
Solution:
The begetting should be replaced with GM part # 29531106
TSB PIP3598C – Intermittent ratio codes or range inhibit – Allison 1000 Transmission
2007 – 2012 Chevrolet Silverado – 2001 – 2007 Chevrolet Silverado Archetype – 2007 – 2012 GMC Sierra – 2001 – 2007 GMC Sierra Classic – 4WD But
Problem – Drivers may feel intermittent no forrad or reverse status, the possibility of a flashing PRNDL display or a "range shift inhibited" message in the driver data eye with no saved DTCs. Some other possible symptom includes the following DTCs: P0729, P0731, P0732, P0733, P0734, P0735 & P0736
Solution – These Allison 1000 transmission problems may exist caused by either an input speed sensor and or output speed sensor issue. The problem could too be caused by a mechanical issue within of the iv-bike-drive transfer case like a worn bushing.
TSB 14308 – Leak at transmission cooler
2008 Chevy Silverado HD – 2008 GMC Sierra HD
Problem – Diesel powered 2008 Chevrolet Silverado 2500HD / 2008 Chevrolet Silverado 3500HD and 2008 GMC Sierra 2500HD / 2008 GMC Sierra 3500HD trucks equipped with the Allison g 6-speed automated transmission (RPO MW7), may have a condition in which increased transmission oil cooling circuit pressure may crusade transmission fluid to cry or leak. This loss of fluid occurs about the transmission cooler at the crimp joints on the metal ends of the cooler line where information technology joins the rubber hose. The increased oil cooling circuit pressure typically occurs while driving in extremely depression temperatures.
Solution – Audit and supervene upon cooler lines if necessary.
TSB 04-07-30-018A – Ice buildup on shift cable – Allison thou Transmission
2001-2006 Chevrolet Silverado 2500HD – 2001-2006 GMC Sierra 2500HD
Problem – In cold climates, it may not exist possible to shift the transmission afterwards operating information technology in snowfall, slush, or icy conditions. This is probable due to ice buildup around the shift cablevision-to-manual shaft connexion.
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 betwixt 46 mph (74 km/h) and 49 mph (79 km/h).
Solution – Reprogram the TCM with TIS version 6.0 or higher.
TSB 08-07-30-049A – Transmission fluid leak from the ATF cooler – Allison 1000
2006-2007 Chevrolet Silverado Classic 2500 – 2007-2009 Chevrolet Silverado 2500HD – 2007-2009 GMC Sierra 2500HD
Problem – ATF leak coming from one of the transmission cooler lines.
Solution – Replace lines with updated design: GM Part #'due south 20759971 (upper), 20759972 (lower), 20759971 (hose).
TSB 10-07-xxx-008A – Transmission won't shift into overdrive – Allison 1000
2006-2010 Chevy Silverado Hard disk – 2006-2010 GMC Sierra HD
Problem – Owners may feel a failure to shift into overdrive, or a iv-5 shift flare. Possible DTC P0777 or P0735.
Solution – Inspect and perchance replace the tertiary, 5th, and opposite clutch piston.
PIP4290A – Engine Stalling – Allison one thousand
2007-2013 Chevrolet Silverado HD – 2007-2013 GMC Sierra HD
Problem – Owners may experience stalling or surging when stopped with the manual in gear. Possible DTC P0742.
Solution – Audit and replace the TCC solenoid and valve within the valve torso.
Other Information
Light Trucks
The Lodge of Automotive Engineers stated that Allison fabricated extensive preparations and conducted inquiry prior to the introduction of the Allison 1000. They extrapolated torque increase in truck engines by watching the growth that occurred from 1990 to nearly 1994, approximately 15 pound-feet of torque increase per twelvemonth.
Features
Allison succeeded with its earlier model, the AT542, but vastly improved its design for the 1999 introduction of the Allison 1000. For case, the 1000 model has an overdrive gear, valve body, torque converter clutch, and a parking pawl.
Adaptive Learning
The Allison thousand makes use of an advanced learning feature called adaptive learning. Adaptive learning involves taking a ready of ongoing data from driving most how the vehicle handles nether road conditions.
It checks the actual recorded shift times and compares them to a prepare of prefixed values that the manual uses to determine how information technology should shift. This is an ongoing procedure.
It can cause problems with aftermarket parts. Because the adaptive learning parameters adjust to defaults, annihilation outside that amount will non read correctly.
Updates to the Remanufactured Allison 1000
- Complete registering of a remanufactured valve trunk. Improvements to pressure command and the quality of the shift.
- Calibration kit is an extra comeback.
- New front pump covers maintain seal integrity effectually torque converters.
- Inverse the lubricant regulator valve in an effort to lower operating temperatures. Also added a new upgraded relief spring.
- Switched out F-trim valve sleeve to aid in cooling the torque converter and reduce overheating.
- Changed the E-shift valve spring to add to the manual'southward durability.
- C3 clutch received additional plate for greater friction and control
- New pump with redone bushings to promote proper fluid motion within the manual
- Fully remade torque converter installed and tested for various qualities similar concentricity, leakage and residual in an effort to forbid premature habiliment and excess vibration. Upgrades go beyond the OE specifications.
- Bushings replaced in an effort to forestall fluid leakage at leak-prone locations forth the seals and joints of the transmission in an effort to improve pressure consistency.
- New calibration kit installed, which includes changes to the valve body accumulators, the servo organization, and the PR arrangement.
- Prior to shipment, the manual undergoes a strenuous test via computer-based road simulation nether both hot and cold conditions to ensure the integrity of all components.
How to Buy a Remanufactured Allison thousand Transmission
1) Buying Locally
When you go to your local repair store, they'll order a remanufactured transmission, then mark upward the toll. So at the cease of the solar day, you lot'll be paying 15% to 30% more than than the actual toll of the unit.
ii) Ownership Online
Buying a reman transmission through a distributor like Street Smart Transmission volition save you lot a considerable corporeality of coin because you pay the wholesale price (avoiding a repair store's xv% to xxx% markup), they'll send the unit of measurement to the shop of your pick free of charge, and returning your quondam manual is free every bit well. Then all you have to pay for is the labor to install the unit (unremarkably $400 to $800), and yous're on your fashion.
How Does information technology Piece of work?
To order a remanufactured transmission from a company like Street Smart Manual, all you need to do is provide your vehicle's VIN number, the mileage, and the address of the repair shop that yous desire it shipped to.
Financing
Replacing a transmission can be expensive, and so Street Smart Transmission offers financing through PayPal. Depending on your credit, you'll be able to order a new transmission, get back on the route, then pay for information technology over time. You may have to pay labor charges for the installation up forepart, but you won't have to beat out out for the transmission all at in one case.
Aircraft Charge/Location
When it comes to aircraft, a transmission is quite heavy. Then you lot're going to pay quite a bit of coin, unless the reman transmission visitor offers complimentary shipping. Street Smart offers costless shipping to a business address, which is usually the repair shop that yous've chosen to install the unit.
What is a Core Accuse (Cadre Deposit)?
Every remanufactured manual originally came from somebody else's motorcar. Therefore, they need your broken transmission in society to refurbish it for another customer.
Your quondam/damaged transmission is chosen a "core", and many companies will collect a core charge (normally $500 to $1500), which will be refunded once they receive your erstwhile manual. However, if the manual example, or other central components are damaged beyond repair, you may non get all of your cadre charge dorsum. Brand sure to enquire for the core return policy, so y'all'll know what to look.
Our Recommendation
Nosotros recommend Street Smart Transmission. We have found Street Smart to be of the highest quality. Their transmissions carry a 3 yr / unlimited miles warranty that covers both parts and labor. Their warranty is nationwide and attached to the VIN so it is transferable with buying if yous decide to sell the vehicle. It also covers both parts and labor for the installation of the replacement transmission.
Lookout the Remanufacturing Process
How it Works
Finding a Shop to Install the Remanufactured Transmission
If your manual has failed, you're going to need a skilled mechanic to supersede it. You tin discover a shop using our shop locator map.
For warranty purposes, you need to find a reliable repair shop. That manner, if the replacement transmission doesn't work properly, the warranty volition embrace it.
We know how frustrating information technology can be to take your truck's manual exit, especially given how much it tin price to supercede it. What makes it worse is that unless you are a mechanic, you may not know what caused the demand for the replacement. We tin become y'all a refurbished transmission at a reasonable out-the-door price. The shipping fee is included, and we tin have the manual sent to your home or to whatsoever nearby auto shop for ease of repair
Set to Replace Your Transmission?
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Gmc Duramax With Allison Transmission Stuck in 2 Gear 1900 Rpm UPDATED
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