A rich fuel-to-air ratio can cause your engine to misfire, while a lean ratio can cause stuttering when it periodically fails to ignite. When this failure occurs you may observe messages such as Range Shift Inhibited, Service Brake System, Service stabilatrak, or might experience loss of gear shift indicator on dash, slamming into Drive or Reverse, and. 2009-2015 TCMS are on BACK ORDER The 2006 To 2015 GM Duramax Diesels Are Prone To TCM Failure Issues. 1 - 5 of 5 Posts. basically I could not use the orig 2010 tcm file so I used a known good stock 2010 tcm file, after that truck is stuck in 3rd. These 2 circuits are high & low reference for the Controlled Area Network. This time however I got a AutoCal error code saying it could not communicate with the ECM. Disconnect the negative battery cable before disconnecting the connector on the TCM. A couple years ago I was having Can-Bus communication issues on a 2010 Duramax short bus, (TCM, Glow Plug , and abs modules couldn&39;t communicate, I believe) but couldn&39;t find much info online. Can not communicate with tcm. Nov 27, 2011 Start with the simplest and most basic troubleshooting Check all plugs and connections. 2007 GMC Sierra Classic SLT K3500 CC DRW. 2011 Chevy 2500 had Duramax no communication with tbcm tcm pcm after shorting out my ratchet on back of alternator blew big buss read more. The EBC is on this Data Link, and if the EBC has a bad ground, this could be part of the problem with communications to other Modules. Disconnecting A Car Battery. If the TCM does not communicate with a TCM compatible scan tool, the TCM may be faulty and need to. When it happens, the car is likely to burn more fuel than usual. double check that the 12v and ground are consistent but if its good you will need to replace and reprogram the TCM im afraid. I finally got a chance to look at it yesterday and it acted dead so I threw the charger on it. Check if this part fits your vehicle. That's what the shops should have done, imho. For stored codes in this situation, clear the codes and road test, then recheck if the codes return. Severity in this case can be severe, if the TCM sends the incorrect data to the moduledisplay system, thereby providing incorrect navigational information. So the TCM actually grounds the circuit through the TCM ground but the TCM is in between the sensor and the actual ground. Shift solenoid repair or replacement. If the TCM is active, your condition is most likely intermittent, which can be hard to trace. Customer may comment that the vehicle will not crank or startwill not shift after the. The TCM is bad, or a wire (most likely a ground) is loose. Select Permanent Unlock, then restart your phone. If I look for the vin number with the V2, their is no vin number, but the computer does show operating sys 12597107. indoor facility houses everything Duramax including (but not limited to) complete trucks, drive-trains, drive-train partsaccessories, . You experience significantly lower gas mileage. 7 KB Views 933 dlc0. A few TCM&39;s have been returned from the field for analysis because . sooo the tcm went in my truck last night. Models affected 2006-2007 Chevrolet Silverado. But if you are a newbie, you may need about 20 to 30 minutes most. Possible resolutions include TCM replacement. Press the gas pedal, Once you have finished with the previous step, now you just have to step on the accelerator pedal. Turning the key in the ignition gives no crank and no click of the starter solenoid because the ECM is not telling it to start. May 1st, 2012 7. If not the actuator is bad, If the fuse blows, unplug the motor on the transfer case. Product Description. If you can access codes from the TCM module, then the U0101 code is either intermittent or a memory code. As throttle input and load increases, so does the calculated torque the TCM estimates. The internal circuit board fails and is not serviceable. PIP3605A CTC U0101. Check if this part fits your vehicle. Our 66000 sq. Poor shifting or recurring limp mode. Model 10201. Part Number AC24275872. 8L LWN Duramax 2020-Present GM 6. The internal circuit board fails and is not serviceable. Add to cart. Step 1. Free shipping. This repair at a dealership can cost 700-1000 on average plus the tow bill to get the truck there. Our TCM will have you back on the road. He said it seems like it might be a data link fault. The ECM on. 8 people found this helpful. So the TCM actually grounds the circuit through the TCM ground but the TCM is in between the sensor and the actual ground. A faulty TCM. This service is provided for the ECM that, Will not communicate through the OBD port, Has been locked with a handheld tuner you no longer have, or Has been keylocked by an EFILive programmer. Working on our 02 LB7 that supposedly died while one of the workers was using it. Look for loose plugs, corroded pins andor moisture, and make sure no pins in the plugs are partially pushed out of the connectors. man splits lottery with friend. One of the other guys tried starting it and said it just cranked and did not fire. 5 Jan 7, 2017. If unable to talk to the TCM module, then the U0101 code that the other modules are setting is active, and the problem is there now. If not, the DLC connections from pin 1 to S1 is no good. Try these methods to isolate which module is causing the concern Remove the battery feed fuse for each high-speed LAN module one at a time while monitoring the scan tool to see if communication returns with the other modules. If the TCM is active, your condition is most likely intermittent, which can be hard to trace. Intermittent U0101. U0101 code is usually caused by one of the following factors The battery is almost empty. The P0700 code can also be seen if the fluid is low or the transmission is failing. Also the speedo is dead and the truck will not shift out of 1st gear i assume. You may be seeing poor gas mileage or have transmission shifting problems. The 12-month limit does not apply to the military staff wanting carrier to unlock This is one of the best application to unlock FRP Download the Mobdro app free from the official website Unlock Any T Mobile USA, MetroPcs Device, Via Device Unlock App,Video Shows HTC How to Unlock T-Mobile Device Unlock probado y funcionando al 100 con chimera. 8L LWN Duramax 2020-Present GM 6. When this 2013 GMC Duramax. The Body Control Module has to be powered, since it sends a WAKE-UP to the TCM to begin communications. PCM B - 20 Amp 2. Valve body replacement. 125 Towed it to a local diesel shop who said they could fix it up, i wound up buying a junk yard ECM and they installedit in the truck and still couldnt communicate with it. Do not connect to the body or chassis ground but to the battery terminal directly. Test for continuity between pins 9 and 69 at the TCM. Youll listen to two clicks of sound from behind. Your vehicles communication data bus serves as the line of communication between different modules in your vehicle, including its primary computer or PCM. 8L LWN Duramax 2020-Present GM 6. I do not have a solution for your specific problem,. When this communication system is lost, the entire computer system fails to regulate the engine properly. 002 ohms or lower. Mar 17, 2015 2013 Duramax U0101 code. Aug 29, 2016 Because DTC U0101 is refers to loss of communication with the TCM, determine if your scan tool can communicate with the TCM. The Most Common Issues Are U0101 Loss Of Communication To The TCM, Hard Transmission SlaMMing From Gears, Range Shift Inhibited And GearIndicator Not Displaying. 2003 Chevrolet Silverado LS 6. I don&x27;t know if TCM can fail intermittently or not but I believe this combination of symptoms may point to the location of a short. Normal voltage reading should be 5-7 volts. Tech 2 cannot reflash (we often can) Also TCMs that create, OBD codes with P07xx. Starting From 795. Models affected 2006-2007 Chevrolet Silverado Classic. It would also reset after it sat for a few hours or overnight and would be fine upon start up, but eventually go into limp after driving or another shut of, but not everytime it was shut off. Our 66000 sq. The most common failure is loss of power or ground. Working on our 02 LB7 that supposedly died while one of the workers was using it. Data link connector terminals 6 and 14 provide the connection to the GMLAN serial data high circuit and the GMLAN serial data low circuit respectively. Select Permanent Unlock, then restart your phone. While the problem is happening diagnostics cannot communicate with the transmission. Once located, visually inspect the connectors and wiring. When this communication system is lost, the entire computer system fails to regulate the engine properly. May 01, 2012 If it got at least 20 seconds or so into the flash before it was stopped then the ECM should be recoverable. I finally got a chance to look at it yesterday and it acted dead so I threw the charger on it. If unable to talk to the TCM module, then the U0101 code that the other modules are setting is active, and the problem is there now. The most common failure is loss of power or ground. 1 was ECM lost communication to tcm, next was ECM lost . Select Permanent Unlock, then restart your phone. You will hear five beeps over a span of thirty seconds. But if you are a newbie, you may need about 20 to 30 minutes most. Jan 02, 2017 P0700 is the TCM requesting a MIL (Malfunction Indicator Light aka "check engine"). 2009-2015 TCMS are on BACK ORDER The 2006 To 2015 GM Duramax Diesels Are Prone To TCM Failure Issues. One of the other guys tried starting it and said it just cranked and did not fire. EFILive will report the error, Code 0537 Controller is locked with a custom key There is no simple fix for this unless you have the digital unlock key code. Update, started the truck and everything appeared to be communicating the way it should, then it threw a P0884 code (sct tuner says, tcm power input signal intermittent) while driving it around the neighborhood. Without this line of communication, the different modules in your vehicle cant send signals to one another. 7L 4A nunu TDG MAFIA mafia1. Press the gas pedal, Once you have finished with the previous step, now you just have to step on the accelerator pedal. 1 - 5 of 5 Posts. Step 1 Read Codes, Always start by reading all of the codes triggering the check engine light. The first step in checking the functionality of the TCM Duramax is calibration. I attempted to re-flash my custom tunes onto the ECM because I read that a lot of the time just re-flashing the ECM will fix this problem. The TCM sends the power, the sensor just alters the voltage and sends it back to the TCM. A quality scan tool and a digital volt-ohmeter (DVOM) are necessary to trace U0101 issues. Joined Sep 13, 2013. U0073 is a communication system diagnostic code related to your CANbus. From all out performance builds running 8. Make sure you press it all the way down. The positive lead is hook up at pin 1 of DLC. If the. 00 shipping. Google (Duramax U0105) or what ever your code is, this will bring up all the diesel site and there fix for this code. Your ECM has been tested and known to be good. No engine crank and no communication with TCM Feb. Customer may comment that the vehicle will not crank or startwill not shift. Your vehicles engine roars loudly and has difficulty shifting to higher gears when you attempt to. Now, if you have come here to. 2013 gmc 3500 with a duramax and Allison. Engine 2. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. This truck has had a few lately, it will randomly show no fuel for some reason too. Discussion Starter 2 Jan 2, 2021. We can program the PCM with your supplied VIN for an additional charge of 135. 99 Unlocked T87A TCM (TCM must be received by VSE prior to unlocked TCM being shipped) 599. The 12-month limit does not apply to the military staff wanting carrier to unlock This is one of the best application to unlock FRP Download the Mobdro app free from the official website Unlock Any T Mobile USA, MetroPcs Device, Via Device Unlock App,Video Shows HTC How to Unlock T-Mobile Device Unlock probado y funcionando al 100 con chimera. The first step to figuring out what is causing a U0101 OBDII code, is to check the manufacturer&x27;s TSB database to see if there is a known cause or solution. A loss of serial data communications DTC does. If the wire harness on a 2011 vehicle is too short to relocate the TCM, the TCM should be replaced. Intermittent U0101. Symptoms of a bad transmission control module include You cant shift gears or your vehicle is stuck in gear. With your scan tool, check if the TCM is active on the network. Test the 2 circuits with an ohm meter ,should be. - U100 Class 2 Serial Communication Problem (Current) 9. PIP3605A CTC U0101. 2007-2008 Chevrolet Silverado. Discussion Starter &183; 3 &183; Jan 28, 2011. Apr 9, 2014. Now the check engine lightcomes on intermitantly but the Manual shift is consistant. Aug 29, 2016 Because DTC U0101 is refers to loss of communication with the TCM, determine if your scan tool can communicate with the TCM. The most common failure is loss of power or ground. While the problem is happening diagnostics cannot communicate with the transmission. 2007-2008 Chevrolet Silverado. Be careful about setting the KEY position to the right number. 9L 12V Cummins. Youll listen to two clicks of sound from behind. If not the actuator is bad, If the fuse blows, unplug the motor on the transfer case. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features. GMAllison 24256861 A50T14 GOOD, USED TCM -T14 -Free Shipping & VIN Programming. But if you are a newbie, you may need about 20 to 30 minutes most. Usually, this code is triggered when communication is lost intermittently or fully between your vehicles control modules. L5P Transmission Tune TCM UNLOCK including 4 Credits 1,194. By dpduramax in forum Duramax LB7 Replies 3 Last Post May 12th, 2009, 0606 AM. The TCM is the computer that controls the vehicles transmission. 48 Page 11 1 GC3KZC86DZ303508 L - Light Truck 2013 K- 57C - CK30903 - Silverado Sierra 1 Cheyenne - Bodystyle (4WD 1 AWD) TC04-123 02122010. I&x27;ve checked fuses and grounds I&x27;m about to get two new. Test the. 267 satisfied customers. If your transmission is installed in an older vehicle, check the vacuum lines and other parts connected to the transmission. Customer may comment that the vehicle will not crank or startwill not shift. Boost factoy757 said Hey guys I just purchased a 05 3rd gen and using my Solus pro I can talk to everything but the ecm and tcm no fuel pump prime and has crank no start cond It&39;s my first Dodge coming from the powerjoke. Allison Duramax LML T14 TCM Transmission Control Module 24257038 24256861 OEM 3,300. PROP 65. I changed the. Youll listen to two clicks of sound from behind. 70k Ask an Expert Car Questions GMC Questions Daniel Chaidez, Technician 11,106 Satisfied Customers Technician at Global Auto Repair Daniel Chaidez is online now Continue Related GMC Questions 2013. Jun 23, 2021 The DTC U0101, which stands for Lost Communication with TCM, appears when the TCM is not receiving nor transmitting messages on the Controller Area Network (CAN) bus. Battery positive wires to touch the heatsink of the TCM e. At this point I began researching possible causes on various Duramax forums. 2013 gmc 3500 with a duramax and Allison. 2013 gmc 3500 with a duramax and Allison. 03172015 16. Engine cooling fan runs continuously causing dead 12v Battery. These 2 circuits are high & low reference for the Controlled Area Network. Select Permanent Unlock, then restart your phone. TCM is Transmission Control Module. I no longer monitor the forum, please either post your question or create a support ticket. Keep depressing the pedal and continue to the next step. 48 Page 11 1 GC3KZC86DZ303508 L - Light Truck 2013 K- 57C - CK30903 - Silverado Sierra 1 Cheyenne - Bodystyle (4WD 1 AWD) TC04-123 02122010. If you are testing LOW SPEED modules, disconnect S1 connector. Entdecke GM Allison Transmission Siverado Duramax A40 TCM LMM 25836825 in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel. Possible resolutions include TCM replacement. TCM wont power up inoperative. Apr 9, 2014. 2010 Chevrolet Malibu LT 2. If not the actuator is bad, If the fuse blows, unplug the motor on the transfer case. So, disconnecting the car battery, to reset the (PCM) on late model vehicles. PIP3605A CTC U0101. While the problem is happening diagnostics cannot communicate with the transmission. This service is provided for ECMs and TCMs that, Cannot be read or reflashed through the OBD port, Corrupt OS or software report. Disconnect and inspect the G102 wire terminal and connection for looseness and corrosion. To correctly identify the problem, you will need to have a scan tool that communicates with the TCM to determine the problem in the transmission. Jul 15, 2018 03 cummins2500 4x. I attempted to re-flash my custom tunes onto the ECM because I read that a lot of the time just re-flashing the ECM will fix this problem. Following is a list of common areas where the High Speed GMLAN wiring. The first step to figuring out what is causing a U0101 OBDII code, is to check the manufacturer&x27;s TSB database to see if there is a known cause or solution. IGN 0 - 10 Amp The Body Control Module has to be powered, since it sends a WAKE-UP to the TCM to begin communications. sooo the tcm went in my truck last night. What else can cause TCM loss of communication Thanks for any input Beau D dmax3500 Registered Joined Mar 27, 2005 12,737 Posts 2 Dec 27, 2015 first take off the bullydog,then lookm at any and all connections,try running the truck stock,and then if no codes or TCM problems ,its the bullydog 2013 2500 ltz 4x4 da,, fully loaded ,white crew cab. Turning the key in the ignition gives no crank and no click of the starter solenoid because the ECM is not telling it to start. Disconnect the negative battery cable before disconnecting the connector on the TCM. Models affected 2006-2007 Chevrolet Silverado Classic. I believe, and it has been suggested by the shop that . The DTC U0101, which stands for Lost Communication with TCM, appears when the TCM is not receiving nor transmitting messages on the Controller Area Network (CAN) bus. Not clear on whether it died or stopped moving, heard two stories. Free shipping. Engine may stall (applies to Corvette, Hybrid Full Size Truck models) A driver information center (DIC) message may be displayed. Relocate the TCM (1) to the top of the UBEC cover and secure it using a heavy duty adhesive or Velcro hook and loop fastener. Like (77) Rob November 4, 2020 I ha e a 05 gmc sierra put a new transmission in put it gear and have no power any idea Like (72). One of the other guys tried starting it and said it just cranked and did not fire. If you can access codes from the HVACCM, then the U0164 code is either intermittent or a memory code. antiques knoxville tn, bestbuy router
If unable to access the HVACCM, then the U0164 code that the other modules are setting is. . Duramax tcm not communicating
Boost factoy757 said Hey guys I just purchased a 05 3rd gen and using my Solus pro I can talk to everything but the ecm and tcm no fuel pump prime and has crank no start cond It&39;s my first Dodge coming from the powerjoke. Possible resolutions include TCM replacement. If it does, the next step is to perform a visual inspection. L5P Transmission Tune TCM UNLOCK including 4 Credits 1,194. What I see is a group of symptoms. There is no simple fix for this unless you have. 2013 gmc 3500 with a duramax and Allison. 2500 and 3500 HD SilveradoSierra's equipped with the 6. It only seems to act up once the TCM (mounted on r. Equipped with Allison LCT-1000 (RPO-MW7)Automatic Transmissions. Cannot communicate with tcm. Document ID 2074199. If unable to communicate with the TCCM module, then the U0102 code that the other modules are setting is active, and the problem is there now. We stopped at that point because he had an appointment to keep. This service is provided for the ECM that, Will not communicate through the OBD port, Has been locked with a handheld tuner you no longer have, or Has been keylocked by an EFILive programmer. TCM module problem; 1) Limp Mode (Allison 1000 Model) The Allison transmission 1000 model has a feature called "limp mode", in which the transmission locks itself into third gear. Transmission control module (TCM) 8. No engine crank and no communication with TCM Feb. No engine crank and no communication with TCM. That's what the shops should have done, imho. code reader is saying it cant communicate with the tcm. Entdecke GM Allison Transmission Siverado Duramax A40 TCM LMM 25836825 in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel. Intermittent U0101. At this point I began researching possible causes on various Duramax forums. There are a few ways to reset your Engine control modules. Shift solenoid repair or replacement. The EBC is on this Data Link, and if the EBC has a bad ground, this could be part of the problem with communications to other Modules. I have almost 36k on it now and no problems since with the replacement TCM so who knows. Like (84) Rob November 4, 2020 I ha e a 05 gmc sierra put a new transmission in put it gear and have no power any idea Like (77). Replace transmission fluid. After the check engine light appearing on my car, I tried to connect the obd 2 diagnostic scan tool, only to show errors instead of showing the trouble codes. This code can register in a variety of modules, including the PCM, TCM, anti-lock braking system (ABS), or body control module (BCM). Early 2015s came with the A50. Working on our 02 LB7 that supposedly died while one of the workers was using it. Reseat the TPA lock and ensure that it is fully seated. TEST 1 Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. Equipped with Allison LCT-1000 (RPO-MW7. Severity in this case can be severe, if the TCM sends the incorrect data to the moduledisplay system, thereby providing incorrect navigational information. Dec 28, 2020 To reset my TCM I turn on the key to the on position press the gas pedal to the floor for 10 seconds and then turn the key off then release the gas pedal and wait about 5 minutes to restart the engine. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. It will have a Delphi Automotive Under Hood Rated FuseRelay block with a legend and dust cover and a 5 foot long OBD Port. Perhaps the most devastating of all Duramax failures is a broken factory crankshaft. Engine 2. We can program the PCM with your supplied VIN for an additional charge of 135. Models affected 2006-2007 Chevrolet Silverado Classic. Contact the seller. Discussion Starter &183; 1 &183; Jul 15, 2018. U0100, U0101, U0102, U0109,. Look for scraping, rubbing, bare wires, burn spots or melted plastic. Wiring Diagrams For Transmission And The Tcm Control Module. Duramax 06 LLY 06 LBZ & LMM; Truck wont shift and getting a U0100;. I no longer monitor the forum, please either post your question or create a support ticket. 6L Duramax routinely have factory TCM issues that cause limp mode, loss of PRNDL display, and trigger check engine lights. Do not connect to the body or chassis ground but to the battery terminal directly. Whether its J1939 CAN or GMLAN CAN, doesnt matter. 2011-15 Duramax Diesel Allison 1000 Transmission Control. In this video I have a look at a 2009 GMC 2500 that is exhibiting some really strange transmission issues. Locate where the ground attaching points are on the vehicle. purge solenoid, plugs, tcm,and pcm and still same stuff. Entdecke GM Allison Transmission Siverado Duramax A40 TCM LMM 25836825 in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel. TCM harness is open or shorted TCM circuit poor electrical connection How to Fix the U0101 Code Start by checking the "Possible Causes" listed above. Check all fuses that power up the TCM module on this vehicle. If continuity. Its not required to push the accelerator in the beginning. Try these methods to isolate which module is causing the concern Remove the battery feed fuse for each high-speed LAN module one at a time while monitoring the scan tool to see if communication returns with the other modules. GMAllison 24256861 A50T14 GOOD, USED TCM -T14 -Free Shipping & VIN Programming. Entdecke GM Allison Transmission Siverado Duramax A40 TCM LMM 25836825 in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel. Depress the accelerator pedal all the way down to activate the kick-down switch. Connect the G102 wire terminal and secure properly. To avoid damaging a TCM in this manner, NEVER ALLOW the following 1) Battery positive wires to touch the heat-sink of the TCM (e. Allison A50 Transmission Control Unit with DDP Trans tuning for 2009-2015 Duramax Diesel&x27;s. Customer may comment that the vehicle will not crank or startwill not shift after the. Start by getting your ALDL working. Remove the C3 (X3) connector from fuse block to isolate the high- speed LAN modules in two halves. . I believe, and it has been suggested by the shop that I use, that the problem is a short somewhere. OnStar diagnostics told me TCM and ECM are not communicating that is why when I. Joined Sep 13, 2013. Jan 28, 2021 okay good. Check all fuses that power up the TCCM module on this vehicle. My Fleet; 2011 Volkswagen Jetta TDI 2. Customer may comment that the vehicle will not crank or startwill not shift after vehicle has been jump started due to battery run down or after installation of after market equipment. i had the same problem with my 2012 GMC LML, it ended up being the TCM. wires a dlc I am getting 120 ohms so if im thinking cor read more. 0260550002 RE5E05A Remanufactured TCM Transmission Control Module Compatible with Nissan Frontier Xterra. If your transmission is installed in an older vehicle, check the vacuum lines and other parts connected to the transmission. Customer also had taken the car to the dealership in Chicago, they were also unable to communicate with any modules. Test for continuity between pins 9 and 69 at the TCM. ANY REQUEST FOR A SAME. He said it seems like it might be a data link fault. Various sensors provide input to the TCM. Here we will discuss different steps of how to test the TCM Duramax and possible problems associated with it. 5-2007 Cummins 5. Still u0101 code present. The EBC is on this Data Link, and if the EBC has a bad ground, this could be part of the problem with communications to other Modules. Your machanic can test your FICM if it s good or not. If this doesn&39;t work, you need someone to help you, and you need a Volt OHM Meter, or a Test Light with a 12 VDC Bulb. The CEL never had a chance to set as something did not feel right so I scanned it. 99 Unlocked T87A TCM (Keep . Daniel Chaidez, Technician. Modules ECM, TCM Description Lost Communication With Fuel Injector Control Module (FICM) Or give us your codes would really help so we&39;re not doing the guessing game. 2500 and 3500 HD SilveradoSierra's equipped with the 6. Models affected 2006-2007 Chevrolet Silverado Classic. I tuned a customers LBZ 07 traditional with a dsp5 tune and now he has a u101 lost communication with tcm code and when shifted to M it stays on "6" he cant manually shift it. I am getting an intermittent transmission problem. If this doesn&39;t work, you need someone to help you, and you need a Volt OHM Meter, or a Test Light with a 12 VDC Bulb. Check all fuses that power up the Check all grounds for the TCM. Test for continuity between pins 9 and 69 at the TCM. 2011 Duramax, no communication with TCM or ECM J Hall, ASE Certified Technician 2,455 Satisfied Customers Auto Instructor at Universal Technical Institute J Hall is online now Related Chevy Questions 2016 Chevy Express 3500 6. Intermittent U0101. The body control is showing a code U1000. Joined Oct 6, 2014. Your ECM has been tested and known to be good. To correctly identify the problem, you will need to have a scan tool that communicates with the TCM to determine the problem in the transmission. I changed the trans fluid and filter. . zillow newberry sc