Duramax transmission control module location

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Duramax Tuning

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Auto Trans Oil Pump Slide. Auto Trans Output Shaft Seal. Auto Trans Pressure Control Solenoid. Auto Trans Shift Kit. Auto Trans Shift Shaft Seal.If you need help locating it, send us Ebay message and we will send you the link. DCRs are considered at our sole discretion and only before the order has been programmed and processed for shipping.

By purchasing this listing you acknowledge that you have read these terms and agree with them.

duramax transmission control module location

We program ECUs using advanced custom programming systems. This allows us to map parameters in many calibrations to better serve customers' needs. This also allows us to program directly off-board some ECUs which cannot be programmed standalone using standard OEM flash tools; hence we are the only Ebay seller offering programming service for such modules whereas others do not. We continuously work to improve our capabilities in order to better serve our customers, so if we currently do not support certain modules or calibration parameters, we may in the future.

Thank you guys. Received part quickly and was a breeze to install. Saved the headache of getting my truck towed to a dealer to flash the tcm. Sold as advertised, very happy works great would recommend to anyone. Lifetime Warranty. Brand New. PCMperformance vectorbundle ECMs and programming.

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You need only disconnect battery, install the TCM, reconnect battery and drive thevehicle. No additional procedures are required. The TCM auto-learns. Any idle instability is transient and will disappear on its own. We are required by Ebay to ship within 2 days. We do not ship orders late as it is detrimental to our Ebay seller ratings.

Please communicate in a timely manner. All orders that cannot be processed in time to meet our 2-day Ebay shipping obligation due to unresponsive buyers are canceled and refunded. USPS Express mail is also available at checkout for additional cost if you need it faster. The processing time business days does not change.

We only ship USPS. We generally do not ship on weekends. All ECUs must be installed by professional automotive technician into the correct, unmodified, application vehicle that it was ordered for. All ECUs must be returned in same unaltered condition as they are received. Any alteration to the form or function of the ECU, which includes but is not limited to opening or re programming it, voids the warranty.The OEM GM engineers worked tirelessly to match the programming found within the two to create good drivability for every situation.

While the aftermarket has focused on the ECM performance side of things, the TCM adjustments have always been a step or two behind, especially in high horsepower applications. To get a better handle on this, Nick Priegnitz owner and lead tuner at Duramaxtuner set out to unlock all the hidden potential within the TCM. While the TCM adjustments will be more noticeable in a modified application bigger tires, bigger turbos, bigger injectors, etc.

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For those jumping to inch or taller tires, the rolling resistance, rotating mass and overall change in gear ratio can really affect how the truck accelerates. By moving the shift point later in the rpm range, the engine will stay in a higher rev range keeping the engines power output where it needs to be. The next major adjustment within the TCM removes the major defuel felt on the shift exchange at wide open throttle.

GM Transmission Control Moudule TCM GMC, Chvey, Silverado, Sierra, Tahoe, Yukon, Suburban

This is much more noticeable with a built transmission and higher horsepower application, but can definitely be noticed in stock transmission truck as well. Basically, the factory TCM is commanding the ECM to pull fuel before the shift to limit torque being sent through the transmission during the shift.

In six-speed applications, the overdrive and double overdrive gears can be a little reluctant to down shift, which keeps rpm low, this keeps the truck from accelerating on the highway like it should. The Duramaxtuner TCM allows the downshift from fifth and sixth gear to happen at a lower throttle percentage at lower rpm, so the truck will effortlessly find a lower gear, create boost, and accelerate around someone much easier.

Lastly, for the big turbo crowd, rpm can become your new best friend and the TCM adjustments can make a truck much friendly on the street.

duramax transmission control module location

For the competition crowd, the new TCM programming can also be setup specifically to meet your needs on both the sled pull and asphalt drag track. Since most sled pull applications are running big single turbos that can be hard to light, Duramaxtuner can set the TCM up with second or third gear starts when running in four-low.

By avoiding first gear all together, the TCM can command a second or third gear launch from the starting line which will allow a much heavier load to be placed on the engine to help spool a big turbo. This allows a harder load to be placed on the engine for more boost on the line and prevent the truck from creeping through the brakes at the staging tree.

Launching in second gear can also make for much more consistent ft times, due to the smoother launch and lack of the shift happening so quick after you leave the line. Better torque converter lock-up is also achieved within the TCM tunes to improve power transfer to the ground. As horsepower continues to climb it becomes much harder for the torque converter to fully lock under heavy load due to some limitations within the factory TCM programming.

Third, fourth even fifth gear lock-up is not unheard of in big power trucks. So rather than locking when you want and need it most, sending percent power to the tires, the transmission just delays, slips, creates excessive heat and wastes energy.

The Duramaxtuner TCM files will eliminate this all together thanks to minor adjustments made within the torque converters lock-up tables in the programming. For competition guys, sled pullers and drag racers alike, the new TCM programming can also eliminates the need to run a separate lock-up control box. So no more buttons to push to command lock-up as you go down the track and no more remembering to unlock at the end of the track either.

You can focus on driving and let the truck and Allison due its own thing, without questioning its consistency. Limited by the stock transmission, the Spade offered up to hp over stock, but we spent most time driving in the 80 hp file as it seemed to be best for daily driving. The second test vehicle was a LB7 Chevrolet running a host of modifications, 67mm single turbocharger, built Allison transmission, intake and exhaust upgrades, fuel lift pump and inch tires.

The truck had already been tuned with Duramaxtuner ECM files and had been dyno tested at close to hp, so the owner already knew the performance potential of the truck, but the factory TCM tune was definitely a limiting factor in drivability.

Running the new performance TCM files turned it into an all new truck, with more consistent performance, more predictable gear exchanges with solid converter lock-up at heavy throttle input. No changes were made within ECM files, so there was no increase in power output, but from the seat you could just feel the truck working better.

Shifting quality was improved, defuel felt more appropriate and the truck was much more responsive and fun to drive. The matched TCM and ECM tuning software offered by Duramaxtuner really can turn just about any Duramax into something closer to the ultimate driving experience. The broader power and torque curves from ECM changes make towing, daily driving and competing more enjoyable while the perfectly matched TCM software ensures all that power is put to good use, efficiently and effectively.

Unlocking an additional hp within the Duramax platform is quite simple with the help of their Spade Tuner, but the corresponding TCM tune-up will really bring the trucks performance to an all-new level.

Duramaxtuner has been tuning the Duramax engine and transmission for years with the EFILive software and has always been on the forefront of product and engineering development within it. Located just inside the driver-side fender well, is the Duramax engines command center, the ECM. While performance programming of the ECM will be handled via the OBD-II port under the dash inside the truck, if you choose to run the optional DSP5 tuning software like most doyou will need to install two new wires into the factory ECM wiring harness connectors.

The DSP5 option will allow you to select from multiple performance tunes via an in-cab adjust on the fly control knob.Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

A few TCM's have been returned from the field for analysis because of the above symptoms. The field returned TCM's were analyzed and found to have two battery ground nodes inside the TCM damaged by excessive electrical current passing through the heatsink of the TCM. The nodes affected described as wire bonds are wire tied to pins 9 and 69[battery ground pins] of the TCM.

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The TCM is manufactured so that the heatsink of the TCM is isolated from all vehicle electrical systems including vehicle chassis ground. Do not ground welders,battery chargers,electrostatic painters or any other equipment to the heatsink.

2011 Chevrolet Silverado 3500 HD Transmission Control Module

Disconnect the 80 way connector from the TCM when electrically welding etc. Battery positive wires to touch the heatsink of the TCM [e. When jump starting vehicle] 2. Positive battery power chassis harness wire to pin 10 and pin 70 of the TCM to be wired without fuse protection of amps. Physical contact between heatsink and vehicle chassis or other ground circuit points. Electrical grounding of devices such as arc welders,battery chargers,and electrostatic painters,or jumper cables to the TCM heatsink.

Switch ignition key off. Test for continuity between pins 9 and 69 at the TCM. Inspect for the source that shorted the TCM heatsink.

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Eliminate or repair the source or condition that caused the damage. NOTE: Visual surface pits and carbon deposits are typically found on the TCM heatsink when high energy arcs are generated by shorts between the heatsink and battery power. Service Bulletin There is a factory service bulletin for the following Chevrolet models: Chevrolet Avalanche Chevrolet Corvette Chevrolet Silverado Chevrolet Suburban Chevrolet Tahoe Chevrolet Silverado Hybrid Chevrolet Tahoe Hybrid Chevrolet Factory Service Bulletin OBDII Code U There is a factory service bulletin for some models with U code, the factory recommends that prior to any parts replaced there are several areas that should be inspected: - One area is the transmission connector pins, for damaged terminals or poor terminal fit.

What does this mean? The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network.Remember Me? Page 1 of 2 1 2 Last Jump to page: Results 1 to 10 of Thread Tools Show Printable Version.

At first, Chevy service guy thought it might be covered under 5 yr power train warranty, but discovered it wasn't. So, called servicing dealer. They said call GM warranty claims, so I did. First guy I talked to was same as dealer service She saw what I was seeing and asked to put me on hold while she called dealer SM. She agreed with me that the manual indicated the part was covered, but said the information on the GM computers was unclear or confusing at best.

While talking to her, I got voicemail from dealer SM saying it looked like they were in error and the part and labor is covered. He is figuring out how to get reimbursed and reimburse me.

Maybe this will help other truck owners to check their warranty manual before paying for service of this type. Sent from my iPhone using Tapatalk. Just to have it here, what were the symptoms you were experiencing that led to this repair? Main symptom was truck not shifting into gear when I depressed brake pedal and moved shift lever.

Sometimes, it would shift into gear but wouldn't shift from 3rd to 4th engine speed would stay between and at 60 mph when it normally would have shifted and dropped to rpm at that travel speed. This was a Sunday late afternoon, so I was going to either drive it or have it towed to nearest Chevy dealer Monday a. When I started the truck Monday morning, it behaved normally, so I drove it the 4 or 5 miles to the nearest Chevy dealer who couldn't get to it for at least 2 weeks even to check error codes so I left to go to next closest dealer miles away.

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As soon as I pulled onto the street and started accelerating I could tell it wasn't shifting again and line under "D" disappeared. I should mention that the check engine light not flashing also came on during the times of not shifting, but the service tech determined this was due to bad NOX and DEF sensors which they replaced under the emissions control warranty without question.

duramax transmission control module location

Sorry for the long explanation, but it was all very strange. I told my DW early on that it seemed like a computer or sensor issue and not a mechanical failure. At least it happened while we were in a campground where we planned to stay for several days and didn't have to make major changes to our plans. There's more to the story, but that's enough for this venue. I'll save the rest for over a beer at a rally somewhere.

Maybe and lets just leave it at that for now. Trans control modules do go bad I have replaced many switches and shift cables for this issue, but not many modules. Callie misses her Kitty.

AirLift with auto leveling. Spray in bed liner and rubber mat. My has been the best of them so far.The OEM GM engineers worked tirelessly to match the programming found within the two to create good drivability for every situation. While the aftermarket has focused on the ECM performance side of things, the TCM adjustments have always been a step or two behind, especially in high-horsepower applications. To get a better handle on this, Nick Priegnitz owner and lead tuner at Duramaxtuner set out to unlock all the hidden potential within the TCM.

While the TCM adjustments will be more noticeable in a modified application bigger tires, bigger turbos, bigger injectors, etc. For those jumping to inch or taller tires, the rolling resistance, rotating mass and overall change in gear ratio can really affect how the truck accelerates.

The next major adjustment within the TCM removes the major defuel felt on the shift exchange at wide open throttle. This is much more noticeable with a built transmission and higher horsepower application, but can definitely be noticed in stock transmission trucks as well.

Basically, the factory TCM is commanding the ECM to pull fuel before the shift to limit torque being sent through the transmission during the shift. In six-speed applications, the overdrive and double overdrive gears can be a little reluctant to downshift, which keeps rpm low, this keeps the truck from accelerating on the highway like it should.

The Duramaxtuner TCM allows the downshift from fifth and sixth gear to happen at a lower throttle percentage at lower rpm, so the truck will effortlessly find a lower gear, create boost, and accelerate around someone much easier.

Lastly, for the big turbo crowd, rpm can become your new best friend and the TCM adjustments can make a truck much more friendly on the street. For the competition crowd, the new TCM programming can also be set up specifically to meet your needs on both the sled pull and asphalt drag track. Since most sled pull applications are running big, single turbos that can be hard to light, Duramaxtuner can set the TCM up with second or third gear starts when running in four-low.

By avoiding first gear all together, the TCM can command a second or third gear launch from the starting line, which will allow a much heavier load to be placed on the engine to help spool a big turbo. This allows a harder load to be placed on the engine for more boost on the line and prevent the truck from creeping through the brakes at the staging tree.

Launching in second gear can also make for much more consistent foot times, due to the smoother launch and lack of the shift happening so quick after you leave the line. Better torque converter lock-up is also achieved within the TCM tunes to improve power transfer to the ground.

As horsepower continues to climb it becomes much harder for the torque converter to fully lock under heavy load due to some limitations within the factory TCM programming. Third, fourth even fifth gear lock-up is not unheard of in big-power trucks. So rather than locking when you want and need it most, sending percent power to the tires, the transmission just delays, slips, creates excessive heat and wastes energy. For competition guys, sled pullers and drag racers alike, the new TCM programming can also eliminate the need to run a separate lock-up control box.Remember Me?

Page 2 of 2 First 1 2 Jump to page: Results 11 to 14 of Thread Tools Show Printable Version. Long story short I got pretty much the exact treatment from the dealership as you did After half an hour of dancing with a Service Advisor he finally called the Service Manager who eventually approved this as a valid warranty claim.

Originally Posted by Jcarlson TCM failed in my HD with 41k miles on it. Last summer my TCM failed during a trip, truck has 90, miles. Code indicated that the neutral start switch which has been moved inside the transmission was bad.

Towed to dealer where they started off by changing the switch, which didn't fix the problem I've since had both NOX sensors go bad. Chevy has extended the warranty on these as they were a problem on the engines so they were done under warranty. You were lucky Tank Back to three Boston Terriers Retired. No fun driving on the freeway in Houston in 2nd gear! Page 2 of 2 First 1 2 Jump to page:. Replies: 12 Last Post:PM. Replies: 39 Last Post:AM. Replies: 13 Last Post:AM.

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U0101 CHEVROLET - Lost Communication With Transmission Control Module

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