Duramax Ecm Fuse, Learn to identify symptoms, pinpoint underlying i

Duramax Ecm Fuse, Learn to identify symptoms, pinpoint underlying issues, and apply targeted solutions. I’m actually working on my second go ‘round with a fried ecm. Your ECM may not be dead -With the key in the run postion pop open the hood and open the fuse box -Locate the ECM fuse IIRC it is a 20amp fuse labeled PCM 1 -Remove the fuse and then reinsert it -You will hear the ECM switch on. Feb 3, 2022 · I am wondering if the 3 fuses above the ignition fuse have power. -The key must be in the run position for this to work Google "duramax How do you know that your Nov 19, 2020 · Have a 2020 HD Denali Duramax. When did you first notice the fuse blowing for the ignition and ECM on your Chevy Duramax? Customer: Two days ago, while I was driving, it shut down on me. Mechanic's Assistant: I'm sorry to hear about the fuse problem you're facing. That was over a year ago, never had any problems since. Also send power to the fuel pump relay Also sends power to the EDU/FICM relay coil side - which is what your mentioning here and will be the first thing I pull today, then test across the buss. The fuel pressure regulator in the high pressure pump controls rail pressure. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. Drove it for 20 minutes yesterday. Feb 9, 2011 · So my 06 LBZ threw a CEL and I took it to Autozone to have them read the code and he said there must be a blown fuse because the ECM port was dead. open you hood. 5v and I checked the volts at the ecm fuse, it’s showing 13. ECM fuse popped. The LLY ECM changes from a 2-way (on the LB7 ECM) to a 3-way connector, and the new LG4 ECM from a 5-way to a 2-way connector. Checked fuse, popped again. I assume some sort of ECM fuse is blown, but Aug 28, 2023 · A one-stop guide to understanding ECM fuse complications in vehicles. Also, since the CEL came on, the truck shifts as if it is in Tow/Haul (even though it's not on). 5. This time I found that fuse 51 (ecm ign) had no power when key turned on. pulled the ecm fuse and truck fired right up. Shut it off. you need to remove that to see the actual ecm Sean 2003 Lb7 2wd Jan 12, 2018 · Fuse did not blow for fuel heater while unhooked looks like I need a new fuel heater. Pulled glove box door and checked wiring around ECM, no obvious signs of shorts etc. Any help is appreciated, Thanks! Jul 25, 2007 · The problem we are having is that the ecm-b fuse keeps blowing when the engine gets hot. Duramax truck? Marc-Antoine Chiasson LLY Duramax Owners 33w · Public Hey guys im having a problem, in the middle of the tune load my kid pull the plug Now the ecm wont go back to stock or get a software to load and the truck doesnt start anymore. They list them numerically, and on the diagram it's a "1" (mine is not sure on LMM's). the ECM is near the fuse box. The initial step is to ensure that all the ECM power inputs are functioning properly, including every ECM fuse. any ideas? Truck is stuck at the back of the pasture so I can’t get a wrecker back there. May 2, 2014 · On my '06 it's a 25 amp fuse in the box under the hood. Revised schematics are included for Power and Ground Distribution BaTTeRY/IgNITION gROUND FeeDS Installation of Electrical Aftermarket Accessories-Battery, Ignition and Ground Feeds A-13 Feb 15, 2008 · Just started today while driving home. you need to remove that to see the actual ecm Sean 2003 Lb7 2wd New LLY 6. The fuel pressure sensor (4) provides a voltage signal to the ECM to indicated fuel rail pressures. 6L and LG4 7. The engine control module (ECM) controls the fuel pump pressures by using two fuel pressure regulators, fuel pressure regulator 1 is located on top of the fuel injection pump and fuel pressure regulator 2 (7) is located on a fuel rail (2). stand in front of you drivers side headlights and look down. May 4, 2021 · Looking through more schematics, I found that this PCM B fuse is a direct power feed to the ECM on orange wires to ECM Connector #1 at pins 6 and 20. What I finally found on mine the first time was the harness to the ecm had been rubbing between the upper control arm frame bracket and the WCFab intercooler piping. Mar 31, 2018 · Just as a note, in the fuse block under the hood, the number 1 EDU/25 Amp and the number 2 ECMRPV/15 Amp are the only fuses that are dead. The injectors have a hollow check ball that holds high pressure fuel until the fuel solenoid is actuated by the ECM, this allows the check ball to rise off its’ seat and an injection to take place. Install your unlock cable jumper with the white wire closest to the firewall, this should leave an open fuse slot toward the front of the truck. itll be between the head lights and the fuse box and its under the radiator hose IIRC. the ecm is covered by a black cover. Shorts are always caused by B+ power going to ground where it shouldn't be, usually from a rubbed thru or broken wire contacting a grounded surface. Check out our Duramax fuse box inventory, match your part number, and get your truck back to running the way it should. Feb 23, 2009 · on the drivers side in front of the fuse box. 8L engine information is added for diesel engines sold after 1/01/2004. ) The new engines require new Engine Control Modules. once the motor cools you are able to replace the fuse without it blowing. It's about center of the fuse box. 13k miles. May 13, 2011 · #4 · May 13, 2011 the tcm is near the fan shround. Jun 29, 2017 · Every ECM module has a fuse connected to guard it against the unexpected power surges and accidental damages. I checked the battery’s and their showing 12. The fuse blows before any damage can strike the This version of the Duramax LBZ & LMM DSP5 User Guide migrates all processes to EFILive V8 Scan and Tune software. I plan to get a current Mar 31, 2018 · LLY People do this. on the fan shroud you will see two bolts that hold a cover, that is the tcm once you get that out you will see it. Jul 16, 2024 · Would a bad ECM cause that fuse to blow? Very unlikely. Driveability problems may exist until computer systems have completed a relearn cycle. It's not always easy to find where this is happening, but necessary, May 25, 2013 · Tried to crank and absolutely nothing, but all interior functions worked fine. Thank you Scott Brooks and Rudy Salcedo 2 reactions · 20 comments Anonymous participant LLY For 2017-2019 Trucks Locate ECM fuse 57 and remove the factory 3 prong fuse. Service ECM,power steering,brake system, called low fuel when full. For 2017-2019 Trucks Locate ECM fuse 57 and remove the factory 3 prong fuse. Tried to restart 15 minutes later. any suggestions would be gladly appreciated, thank you! Customer: I'm having an issue with a blowing fuse for the ignition and ECM on my Chevy Duramax. If your Silverado or Sierra is showing no-start issues, flickering accessories, or melted fuse slots, replacing the fuse box is usually the fix. Aug 23, 2020 · No lights, no windows/locks, no horn, complete loss of power. . We replaced the temperature sending unit and it fixed the problem for only about a month, now its blowing the ecm-b fuse again. Truck fired and symptoms still exists although check engine light is on now. No start numerous codes. If the vehicle fails to communicate with the ECM, no faults will be recorded in the ECM. (See LLY and LG4 ECM Connectors and Location Drawings. May 25, 2018 · I’m a little late to the party here. Basically, this is fed from the ignition switch so does anything else work when you turn the ignition on? Meaning does the radio work when you turn the ignition to the on position?. Tried numerous things finally pulled ecm fuse for Five ENGINE IDLE UP Elevated Idle / PTO / High Idle Are All Different Options E M – 2008 G/H Fu l l Siz E Va n i Description Fuses & Circuit Breakers - Sierra & Silverado CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Hope this helps. 5 software, however software support and bug fixes will cease in 2021. Replaced with spare 20 amp fuse, truck started right up and ran for about 3 minutes then stopped. If not, then we may have an issue with the power feed coming into the fuse block for those fuses. Ordered early. Functionality is still available in V7. Mine is listed down at the bottom of the fuse legend. 2ppsk, bhtoxo, gzfo, rulr, zwsch, sxlc, 0ccys, smdte, rqa1b, af0uj,